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Finding the Fourth Proportional to 1,740.90, 2,610.39 and 863.52

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Solution

The fourth proportional to 1,740.90, 2,610.39 and 863.52 is: 1,294.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,740.90 : 2,610.39 = 863.52 : x
  2. Step 2: Convert to fraction form
    1,740.90/2,610.39 = 863.52/x
  3. Step 3: Cross multiply
    1,740.90x = 2,610.39 × 863.52
  4. Step 4: Simplify right side
    1,740.90x = 2,254,123.97
  5. Step 5: Solve for x
    x = 2,254,123.97/1,740.90
  6. Step 6: Final answer
    x = 1,294.80

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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.