Home / 1,513.22-2,269.82-691.47

Finding the Fourth Proportional to 1,513.22, 2,269.82 and 691.47

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Solution

The fourth proportional to 1,513.22, 2,269.82 and 691.47 is: 1,037.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,513.22 : 2,269.82 = 691.47 : x
  2. Step 2: Convert to fraction form
    1,513.22/2,269.82 = 691.47/x
  3. Step 3: Cross multiply
    1,513.22x = 2,269.82 × 691.47
  4. Step 4: Simplify right side
    1,513.22x = 1,569,514.16
  5. Step 5: Solve for x
    x = 1,569,514.16/1,513.22
  6. Step 6: Final answer
    x = 1,037.21

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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.