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Finding the Fourth Proportional to 7,053.60, 9,734.31 and 3,909.78

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Solution

The fourth proportional to 7,053.60, 9,734.31 and 3,909.78 is: 5,395.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,053.60 : 9,734.31 = 3,909.78 : x
  2. Step 2: Convert to fraction form
    7,053.60/9,734.31 = 3,909.78/x
  3. Step 3: Cross multiply
    7,053.60x = 9,734.31 × 3,909.78
  4. Step 4: Simplify right side
    7,053.60x = 38,059,010.55
  5. Step 5: Solve for x
    x = 38,059,010.55/7,053.60
  6. Step 6: Final answer
    x = 5,395.69

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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.