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Finding the Fourth Proportional to 2,562.20, 3,843.12 and 807.56

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Solution

The fourth proportional to 2,562.20, 3,843.12 and 807.56 is: 1,211.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,562.20 : 3,843.12 = 807.56 : x
  2. Step 2: Convert to fraction form
    2,562.20/3,843.12 = 807.56/x
  3. Step 3: Cross multiply
    2,562.20x = 3,843.12 × 807.56
  4. Step 4: Simplify right side
    2,562.20x = 3,103,549.99
  5. Step 5: Solve for x
    x = 3,103,549.99/2,562.20
  6. Step 6: Final answer
    x = 1,211.28

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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.