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Finding the Fourth Proportional to 8,755.40, 13,133.10 and 5,472.20

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Solution

The fourth proportional to 8,755.40, 13,133.10 and 5,472.20 is: 8,208.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,755.40 : 13,133.10 = 5,472.20 : x
  2. Step 2: Convert to fraction form
    8,755.40/13,133.10 = 5,472.20/x
  3. Step 3: Cross multiply
    8,755.40x = 13,133.10 × 5,472.20
  4. Step 4: Simplify right side
    8,755.40x = 71,866,949.82
  5. Step 5: Solve for x
    x = 71,866,949.82/8,755.40
  6. Step 6: Final answer
    x = 8,208.30

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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.