Home / 3,142.80-4,714.20-1,912.62

Finding the Fourth Proportional to 3,142.80, 4,714.20 and 1,912.62

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Solution

The fourth proportional to 3,142.80, 4,714.20 and 1,912.62 is: 2,868.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,142.80 : 4,714.20 = 1,912.62 : x
  2. Step 2: Convert to fraction form
    3,142.80/4,714.20 = 1,912.62/x
  3. Step 3: Cross multiply
    3,142.80x = 4,714.20 × 1,912.62
  4. Step 4: Simplify right side
    3,142.80x = 9,016,473.20
  5. Step 5: Solve for x
    x = 9,016,473.20/3,142.80
  6. Step 6: Final answer
    x = 2,868.93

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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.