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Finding the Fourth Proportional to 5,425.59, 7,483.21 and 3,938.43

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Solution

The fourth proportional to 5,425.59, 7,483.21 and 3,938.43 is: 5,432.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,425.59 : 7,483.21 = 3,938.43 : x
  2. Step 2: Convert to fraction form
    5,425.59/7,483.21 = 3,938.43/x
  3. Step 3: Cross multiply
    5,425.59x = 7,483.21 × 3,938.43
  4. Step 4: Simplify right side
    5,425.59x = 29,472,088.91
  5. Step 5: Solve for x
    x = 29,472,088.91/5,425.59
  6. Step 6: Final answer
    x = 5,432.05

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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.