Home / 1,517.12-2,279.14-1,079.44

Finding the Fourth Proportional to 1,517.12, 2,279.14 and 1,079.44

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Solution

The fourth proportional to 1,517.12, 2,279.14 and 1,079.44 is: 1,621.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,517.12 : 2,279.14 = 1,079.44 : x
  2. Step 2: Convert to fraction form
    1,517.12/2,279.14 = 1,079.44/x
  3. Step 3: Cross multiply
    1,517.12x = 2,279.14 × 1,079.44
  4. Step 4: Simplify right side
    1,517.12x = 2,460,194.88
  5. Step 5: Solve for x
    x = 2,460,194.88/1,517.12
  6. Step 6: Final answer
    x = 1,621.62

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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.