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Finding the Fourth Proportional to 1,691.87, 2,537.88 and 651.52

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Solution

The fourth proportional to 1,691.87, 2,537.88 and 651.52 is: 977.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,691.87 : 2,537.88 = 651.52 : x
  2. Step 2: Convert to fraction form
    1,691.87/2,537.88 = 651.52/x
  3. Step 3: Cross multiply
    1,691.87x = 2,537.88 × 651.52
  4. Step 4: Simplify right side
    1,691.87x = 1,653,476.32
  5. Step 5: Solve for x
    x = 1,653,476.32/1,691.87
  6. Step 6: Final answer
    x = 977.31

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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.