Home / 9,979.87-13,772.85-5,732.26

Finding the Fourth Proportional to 9,979.87, 13,772.85 and 5,732.26

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Solution

The fourth proportional to 9,979.87, 13,772.85 and 5,732.26 is: 7,910.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,979.87 : 13,772.85 = 5,732.26 : x
  2. Step 2: Convert to fraction form
    9,979.87/13,772.85 = 5,732.26/x
  3. Step 3: Cross multiply
    9,979.87x = 13,772.85 × 5,732.26
  4. Step 4: Simplify right side
    9,979.87x = 78,949,557.14
  5. Step 5: Solve for x
    x = 78,949,557.14/9,979.87
  6. Step 6: Final answer
    x = 7,910.88

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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.