Home / 2,279.52-3,418.20-981.36

Finding the Fourth Proportional to 2,279.52, 3,418.20 and 981.36

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Solution

The fourth proportional to 2,279.52, 3,418.20 and 981.36 is: 1,471.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,279.52 : 3,418.20 = 981.36 : x
  2. Step 2: Convert to fraction form
    2,279.52/3,418.20 = 981.36/x
  3. Step 3: Cross multiply
    2,279.52x = 3,418.20 × 981.36
  4. Step 4: Simplify right side
    2,279.52x = 3,354,484.75
  5. Step 5: Solve for x
    x = 3,354,484.75/2,279.52
  6. Step 6: Final answer
    x = 1,471.58

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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.