Home / 3,319.62-4,979.88-1,127.76

Finding the Fourth Proportional to 3,319.62, 4,979.88 and 1,127.76

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Solution

The fourth proportional to 3,319.62, 4,979.88 and 1,127.76 is: 1,691.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,319.62 : 4,979.88 = 1,127.76 : x
  2. Step 2: Convert to fraction form
    3,319.62/4,979.88 = 1,127.76/x
  3. Step 3: Cross multiply
    3,319.62x = 4,979.88 × 1,127.76
  4. Step 4: Simplify right side
    3,319.62x = 5,616,109.47
  5. Step 5: Solve for x
    x = 5,616,109.47/3,319.62
  6. Step 6: Final answer
    x = 1,691.79

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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.