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Finding the Fourth Proportional to 6,386.70, 8,814.70 and 3,733.60

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Solution

The fourth proportional to 6,386.70, 8,814.70 and 3,733.60 is: 5,152.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,386.70 : 8,814.70 = 3,733.60 : x
  2. Step 2: Convert to fraction form
    6,386.70/8,814.70 = 3,733.60/x
  3. Step 3: Cross multiply
    6,386.70x = 8,814.70 × 3,733.60
  4. Step 4: Simplify right side
    6,386.70x = 32,910,563.92
  5. Step 5: Solve for x
    x = 32,910,563.92/6,386.70
  6. Step 6: Final answer
    x = 5,152.98

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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.