Home / 5,115.31-7,672.95-1,417.53

Finding the Fourth Proportional to 5,115.31, 7,672.95 and 1,417.53

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Solution

The fourth proportional to 5,115.31, 7,672.95 and 1,417.53 is: 2,126.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,115.31 : 7,672.95 = 1,417.53 : x
  2. Step 2: Convert to fraction form
    5,115.31/7,672.95 = 1,417.53/x
  3. Step 3: Cross multiply
    5,115.31x = 7,672.95 × 1,417.53
  4. Step 4: Simplify right side
    5,115.31x = 10,876,641.09
  5. Step 5: Solve for x
    x = 10,876,641.09/5,115.31
  6. Step 6: Final answer
    x = 2,126.29

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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.