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Finding the Fourth Proportional to 1,954.52, 2,932.92 and 722.79

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Solution

The fourth proportional to 1,954.52, 2,932.92 and 722.79 is: 1,084.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,954.52 : 2,932.92 = 722.79 : x
  2. Step 2: Convert to fraction form
    1,954.52/2,932.92 = 722.79/x
  3. Step 3: Cross multiply
    1,954.52x = 2,932.92 × 722.79
  4. Step 4: Simplify right side
    1,954.52x = 2,119,885.25
  5. Step 5: Solve for x
    x = 2,119,885.25/1,954.52
  6. Step 6: Final answer
    x = 1,084.61

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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.