Home / 3,680.65-5,079.18-2,108.71

Finding the Fourth Proportional to 3,680.65, 5,079.18 and 2,108.71

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Solution

The fourth proportional to 3,680.65, 5,079.18 and 2,108.71 is: 2,909.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,680.65 : 5,079.18 = 2,108.71 : x
  2. Step 2: Convert to fraction form
    3,680.65/5,079.18 = 2,108.71/x
  3. Step 3: Cross multiply
    3,680.65x = 5,079.18 × 2,108.71
  4. Step 4: Simplify right side
    3,680.65x = 10,710,517.66
  5. Step 5: Solve for x
    x = 10,710,517.66/3,680.65
  6. Step 6: Final answer
    x = 2,909.95

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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.