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Finding the Fourth Proportional to 6,387.38, 8,814.65 and 3,734.28

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Solution

The fourth proportional to 6,387.38, 8,814.65 and 3,734.28 is: 5,153.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,387.38 : 8,814.65 = 3,734.28 : x
  2. Step 2: Convert to fraction form
    6,387.38/8,814.65 = 3,734.28/x
  3. Step 3: Cross multiply
    6,387.38x = 8,814.65 × 3,734.28
  4. Step 4: Simplify right side
    6,387.38x = 32,916,327.13
  5. Step 5: Solve for x
    x = 32,916,327.13/6,387.38
  6. Step 6: Final answer
    x = 5,153.34

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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.