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Finding the Fourth Proportional to 2,772.80, 4,158.92 and 826.24

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Solution

The fourth proportional to 2,772.80, 4,158.92 and 826.24 is: 1,239.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,772.80 : 4,158.92 = 826.24 : x
  2. Step 2: Convert to fraction form
    2,772.80/4,158.92 = 826.24/x
  3. Step 3: Cross multiply
    2,772.80x = 4,158.92 × 826.24
  4. Step 4: Simplify right side
    2,772.80x = 3,436,266.06
  5. Step 5: Solve for x
    x = 3,436,266.06/2,772.80
  6. Step 6: Final answer
    x = 1,239.28

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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.