Home / 1,171.20-1,753.97-1,118.55

Finding the Fourth Proportional to 1,171.20, 1,753.97 and 1,118.55

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Solution

The fourth proportional to 1,171.20, 1,753.97 and 1,118.55 is: 1,675.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,171.20 : 1,753.97 = 1,118.55 : x
  2. Step 2: Convert to fraction form
    1,171.20/1,753.97 = 1,118.55/x
  3. Step 3: Cross multiply
    1,171.20x = 1,753.97 × 1,118.55
  4. Step 4: Simplify right side
    1,171.20x = 1,961,897.55
  5. Step 5: Solve for x
    x = 1,961,897.55/1,171.20
  6. Step 6: Final answer
    x = 1,675.12

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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.