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Finding the Fourth Proportional to 1,751.80, 2,625.22 and 972.15

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Solution

The fourth proportional to 1,751.80, 2,625.22 and 972.15 is: 1,456.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,751.80 : 2,625.22 = 972.15 : x
  2. Step 2: Convert to fraction form
    1,751.80/2,625.22 = 972.15/x
  3. Step 3: Cross multiply
    1,751.80x = 2,625.22 × 972.15
  4. Step 4: Simplify right side
    1,751.80x = 2,552,107.62
  5. Step 5: Solve for x
    x = 2,552,107.62/1,751.80
  6. Step 6: Final answer
    x = 1,456.85

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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.