Home / 8,622.80-12,937.40-3,427.28

Finding the Fourth Proportional to 8,622.80, 12,937.40 and 3,427.28

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Solution

The fourth proportional to 8,622.80, 12,937.40 and 3,427.28 is: 5,142.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,622.80 : 12,937.40 = 3,427.28 : x
  2. Step 2: Convert to fraction form
    8,622.80/12,937.40 = 3,427.28/x
  3. Step 3: Cross multiply
    8,622.80x = 12,937.40 × 3,427.28
  4. Step 4: Simplify right side
    8,622.80x = 44,340,092.27
  5. Step 5: Solve for x
    x = 44,340,092.27/8,622.80
  6. Step 6: Final answer
    x = 5,142.19

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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.