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Finding the Fourth Proportional to 1,763.73, 2,645.93 and 724.90

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Solution

The fourth proportional to 1,763.73, 2,645.93 and 724.90 is: 1,087.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,763.73 : 2,645.93 = 724.90 : x
  2. Step 2: Convert to fraction form
    1,763.73/2,645.93 = 724.90/x
  3. Step 3: Cross multiply
    1,763.73x = 2,645.93 × 724.90
  4. Step 4: Simplify right side
    1,763.73x = 1,918,034.66
  5. Step 5: Solve for x
    x = 1,918,034.66/1,763.73
  6. Step 6: Final answer
    x = 1,087.49

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1.5x scale

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.