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Finding the Fourth Proportional to 3,143.88, 4,715.82 and 1,844.64

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Solution

The fourth proportional to 3,143.88, 4,715.82 and 1,844.64 is: 2,766.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,143.88 : 4,715.82 = 1,844.64 : x
  2. Step 2: Convert to fraction form
    3,143.88/4,715.82 = 1,844.64/x
  3. Step 3: Cross multiply
    3,143.88x = 4,715.82 × 1,844.64
  4. Step 4: Simplify right side
    3,143.88x = 8,698,990.20
  5. Step 5: Solve for x
    x = 8,698,990.20/3,143.88
  6. Step 6: Final answer
    x = 2,766.96

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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.