Home / 7,320.38-10,981.17-2,126.25

Finding the Fourth Proportional to 7,320.38, 10,981.17 and 2,126.25

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Solution

The fourth proportional to 7,320.38, 10,981.17 and 2,126.25 is: 3,189.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,320.38 : 10,981.17 = 2,126.25 : x
  2. Step 2: Convert to fraction form
    7,320.38/10,981.17 = 2,126.25/x
  3. Step 3: Cross multiply
    7,320.38x = 10,981.17 × 2,126.25
  4. Step 4: Simplify right side
    7,320.38x = 23,348,712.71
  5. Step 5: Solve for x
    x = 23,348,712.71/7,320.38
  6. Step 6: Final answer
    x = 3,189.55

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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.