Home / 8,977.28-12,388.32-5,251.20

Finding the Fourth Proportional to 8,977.28, 12,388.32 and 5,251.20

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Solution

The fourth proportional to 8,977.28, 12,388.32 and 5,251.20 is: 7,246.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,977.28 : 12,388.32 = 5,251.20 : x
  2. Step 2: Convert to fraction form
    8,977.28/12,388.32 = 5,251.20/x
  3. Step 3: Cross multiply
    8,977.28x = 12,388.32 × 5,251.20
  4. Step 4: Simplify right side
    8,977.28x = 65,053,545.98
  5. Step 5: Solve for x
    x = 65,053,545.98/8,977.28
  6. Step 6: Final answer
    x = 7,246.47

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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.