Home / 8,691.53-13,038.30-3,147.48

Finding the Fourth Proportional to 8,691.53, 13,038.30 and 3,147.48

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Solution

The fourth proportional to 8,691.53, 13,038.30 and 3,147.48 is: 4,721.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,691.53 : 13,038.30 = 3,147.48 : x
  2. Step 2: Convert to fraction form
    8,691.53/13,038.30 = 3,147.48/x
  3. Step 3: Cross multiply
    8,691.53x = 13,038.30 × 3,147.48
  4. Step 4: Simplify right side
    8,691.53x = 41,037,788.48
  5. Step 5: Solve for x
    x = 41,037,788.48/8,691.53
  6. Step 6: Final answer
    x = 4,721.59

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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.