Home / 3,123.45-4,685.17-1,976.49

Finding the Fourth Proportional to 3,123.45, 4,685.17 and 1,976.49

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Solution

The fourth proportional to 3,123.45, 4,685.17 and 1,976.49 is: 2,964.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,123.45 : 4,685.17 = 1,976.49 : x
  2. Step 2: Convert to fraction form
    3,123.45/4,685.17 = 1,976.49/x
  3. Step 3: Cross multiply
    3,123.45x = 4,685.17 × 1,976.49
  4. Step 4: Simplify right side
    3,123.45x = 9,260,191.65
  5. Step 5: Solve for x
    x = 9,260,191.65/3,123.45
  6. Step 6: Final answer
    x = 2,964.73

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Similar ratio
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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.