Home / 1,680.38-2,517.30-1,101.50

Finding the Fourth Proportional to 1,680.38, 2,517.30 and 1,101.50

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Solution

The fourth proportional to 1,680.38, 2,517.30 and 1,101.50 is: 1,650.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,680.38 : 2,517.30 = 1,101.50 : x
  2. Step 2: Convert to fraction form
    1,680.38/2,517.30 = 1,101.50/x
  3. Step 3: Cross multiply
    1,680.38x = 2,517.30 × 1,101.50
  4. Step 4: Simplify right side
    1,680.38x = 2,772,805.95
  5. Step 5: Solve for x
    x = 2,772,805.95/1,680.38
  6. Step 6: Final answer
    x = 1,650.11

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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.