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Finding the Fourth Proportional to 4,753.62, 7,127.38 and 1,982.20

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Solution

The fourth proportional to 4,753.62, 7,127.38 and 1,982.20 is: 2,972.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,753.62 : 7,127.38 = 1,982.20 : x
  2. Step 2: Convert to fraction form
    4,753.62/7,127.38 = 1,982.20/x
  3. Step 3: Cross multiply
    4,753.62x = 7,127.38 × 1,982.20
  4. Step 4: Simplify right side
    4,753.62x = 14,127,892.64
  5. Step 5: Solve for x
    x = 14,127,892.64/4,753.62
  6. Step 6: Final answer
    x = 2,972.03

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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.