Home / 9,631.40-13,290.68-5,439.38

Finding the Fourth Proportional to 9,631.40, 13,290.68 and 5,439.38

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Solution

The fourth proportional to 9,631.40, 13,290.68 and 5,439.38 is: 7,505.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,631.40 : 13,290.68 = 5,439.38 : x
  2. Step 2: Convert to fraction form
    9,631.40/13,290.68 = 5,439.38/x
  3. Step 3: Cross multiply
    9,631.40x = 13,290.68 × 5,439.38
  4. Step 4: Simplify right side
    9,631.40x = 72,293,006.12
  5. Step 5: Solve for x
    x = 72,293,006.12/9,631.40
  6. Step 6: Final answer
    x = 7,505.97

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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.