Home / 7,331.71-10,119.12-4,187.90

Finding the Fourth Proportional to 7,331.71, 10,119.12 and 4,187.90

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Solution

The fourth proportional to 7,331.71, 10,119.12 and 4,187.90 is: 5,780.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,331.71 : 10,119.12 = 4,187.90 : x
  2. Step 2: Convert to fraction form
    7,331.71/10,119.12 = 4,187.90/x
  3. Step 3: Cross multiply
    7,331.71x = 10,119.12 × 4,187.90
  4. Step 4: Simplify right side
    7,331.71x = 42,377,862.65
  5. Step 5: Solve for x
    x = 42,377,862.65/7,331.71
  6. Step 6: Final answer
    x = 5,780.08

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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.