Home / 3,141.20-4,711.80-2,630.90

Finding the Fourth Proportional to 3,141.20, 4,711.80 and 2,630.90

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Solution

The fourth proportional to 3,141.20, 4,711.80 and 2,630.90 is: 3,946.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,141.20 : 4,711.80 = 2,630.90 : x
  2. Step 2: Convert to fraction form
    3,141.20/4,711.80 = 2,630.90/x
  3. Step 3: Cross multiply
    3,141.20x = 4,711.80 × 2,630.90
  4. Step 4: Simplify right side
    3,141.20x = 12,396,274.62
  5. Step 5: Solve for x
    x = 12,396,274.62/3,141.20
  6. Step 6: Final answer
    x = 3,946.35

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Half scale
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Double scale
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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.