Home / 3,113.13-4,294.38-1,976.70

Finding the Fourth Proportional to 3,113.13, 4,294.38 and 1,976.70

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Solution

The fourth proportional to 3,113.13, 4,294.38 and 1,976.70 is: 2,726.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,113.13 : 4,294.38 = 1,976.70 : x
  2. Step 2: Convert to fraction form
    3,113.13/4,294.38 = 1,976.70/x
  3. Step 3: Cross multiply
    3,113.13x = 4,294.38 × 1,976.70
  4. Step 4: Simplify right side
    3,113.13x = 8,488,700.95
  5. Step 5: Solve for x
    x = 8,488,700.95/3,113.13
  6. Step 6: Final answer
    x = 2,726.74

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.