Home / 8,972.12-12,387.62-5,616.29

Finding the Fourth Proportional to 8,972.12, 12,387.62 and 5,616.29

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Solution

The fourth proportional to 8,972.12, 12,387.62 and 5,616.29 is: 7,754.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,972.12 : 12,387.62 = 5,616.29 : x
  2. Step 2: Convert to fraction form
    8,972.12/12,387.62 = 5,616.29/x
  3. Step 3: Cross multiply
    8,972.12x = 12,387.62 × 5,616.29
  4. Step 4: Simplify right side
    8,972.12x = 69,572,466.33
  5. Step 5: Solve for x
    x = 69,572,466.33/8,972.12
  6. Step 6: Final answer
    x = 7,754.30

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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.