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Finding the Fourth Proportional to 9,220.88, 12,720.76 and 6,235.64

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Solution

The fourth proportional to 9,220.88, 12,720.76 and 6,235.64 is: 8,602.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,220.88 : 12,720.76 = 6,235.64 : x
  2. Step 2: Convert to fraction form
    9,220.88/12,720.76 = 6,235.64/x
  3. Step 3: Cross multiply
    9,220.88x = 12,720.76 × 6,235.64
  4. Step 4: Simplify right side
    9,220.88x = 79,322,079.89
  5. Step 5: Solve for x
    x = 79,322,079.89/9,220.88
  6. Step 6: Final answer
    x = 8,602.44

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Find fourth proportional to 4,610.44, 6,360.38 and 3,117.82
Half scale
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Double scale
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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.