Home / 10,581.20-15,872.46-2,790.02

Finding the Fourth Proportional to 10,581.20, 15,872.46 and 2,790.02

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Solution

The fourth proportional to 10,581.20, 15,872.46 and 2,790.02 is: 4,185.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,581.20 : 15,872.46 = 2,790.02 : x
  2. Step 2: Convert to fraction form
    10,581.20/15,872.46 = 2,790.02/x
  3. Step 3: Cross multiply
    10,581.20x = 15,872.46 × 2,790.02
  4. Step 4: Simplify right side
    10,581.20x = 44,284,387.54
  5. Step 5: Solve for x
    x = 44,284,387.54/10,581.20
  6. Step 6: Final answer
    x = 4,185.20

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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.