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Finding the Fourth Proportional to 8,219.88, 12,251.73 and 7,752.87

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Solution

The fourth proportional to 8,219.88, 12,251.73 and 7,752.87 is: 11,555.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,219.88 : 12,251.73 = 7,752.87 : x
  2. Step 2: Convert to fraction form
    8,219.88/12,251.73 = 7,752.87/x
  3. Step 3: Cross multiply
    8,219.88x = 12,251.73 × 7,752.87
  4. Step 4: Simplify right side
    8,219.88x = 94,986,069.97
  5. Step 5: Solve for x
    x = 94,986,069.97/8,219.88
  6. Step 6: Final answer
    x = 11,555.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.