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Finding the Fourth Proportional to 1,793.36, 2,691.68 and 972.24

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Solution

The fourth proportional to 1,793.36, 2,691.68 and 972.24 is: 1,459.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,793.36 : 2,691.68 = 972.24 : x
  2. Step 2: Convert to fraction form
    1,793.36/2,691.68 = 972.24/x
  3. Step 3: Cross multiply
    1,793.36x = 2,691.68 × 972.24
  4. Step 4: Simplify right side
    1,793.36x = 2,616,954.10
  5. Step 5: Solve for x
    x = 2,616,954.10/1,793.36
  6. Step 6: Final answer
    x = 1,459.25

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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.