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Finding the Fourth Proportional to 6,385.96, 8,814.18 and 6,018.76

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Solution

The fourth proportional to 6,385.96, 8,814.18 and 6,018.76 is: 8,307.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,385.96 : 8,814.18 = 6,018.76 : x
  2. Step 2: Convert to fraction form
    6,385.96/8,814.18 = 6,018.76/x
  3. Step 3: Cross multiply
    6,385.96x = 8,814.18 × 6,018.76
  4. Step 4: Simplify right side
    6,385.96x = 53,050,434.02
  5. Step 5: Solve for x
    x = 53,050,434.02/6,385.96
  6. Step 6: Final answer
    x = 8,307.35

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Find fourth proportional to 3,192.98, 4,407.09 and 3,009.38
Half scale
Find fourth proportional to 12,771.92, 17,628.36 and 12,037.52
Double scale
Find fourth proportional to 6,386.96, 8,815.56 and 6,019.76
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.