Home / 9,118.97-13,678.29-2,545.20

Finding the Fourth Proportional to 9,118.97, 13,678.29 and 2,545.20

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Solution

The fourth proportional to 9,118.97, 13,678.29 and 2,545.20 is: 3,817.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,118.97 : 13,678.29 = 2,545.20 : x
  2. Step 2: Convert to fraction form
    9,118.97/13,678.29 = 2,545.20/x
  3. Step 3: Cross multiply
    9,118.97x = 13,678.29 × 2,545.20
  4. Step 4: Simplify right side
    9,118.97x = 34,813,983.71
  5. Step 5: Solve for x
    x = 34,813,983.71/9,118.97
  6. Step 6: Final answer
    x = 3,817.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.