Home / 9,861.38-13,609.26-5,385.55

Finding the Fourth Proportional to 9,861.38, 13,609.26 and 5,385.55

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Solution

The fourth proportional to 9,861.38, 13,609.26 and 5,385.55 is: 7,432.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,861.38 : 13,609.26 = 5,385.55 : x
  2. Step 2: Convert to fraction form
    9,861.38/13,609.26 = 5,385.55/x
  3. Step 3: Cross multiply
    9,861.38x = 13,609.26 × 5,385.55
  4. Step 4: Simplify right side
    9,861.38x = 73,293,350.19
  5. Step 5: Solve for x
    x = 73,293,350.19/9,861.38
  6. Step 6: Final answer
    x = 7,432.36

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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.