Home / 10,387.38-15,581.07-2,788.77

Finding the Fourth Proportional to 10,387.38, 15,581.07 and 2,788.77

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Solution

The fourth proportional to 10,387.38, 15,581.07 and 2,788.77 is: 4,183.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,387.38 : 15,581.07 = 2,788.77 : x
  2. Step 2: Convert to fraction form
    10,387.38/15,581.07 = 2,788.77/x
  3. Step 3: Cross multiply
    10,387.38x = 15,581.07 × 2,788.77
  4. Step 4: Simplify right side
    10,387.38x = 43,452,020.58
  5. Step 5: Solve for x
    x = 43,452,020.58/10,387.38
  6. Step 6: Final answer
    x = 4,183.16

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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.