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Finding the Fourth Proportional to 8,800.91, 12,145.14 and 4,821.78

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Solution

The fourth proportional to 8,800.91, 12,145.14 and 4,821.78 is: 6,653.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,800.91 : 12,145.14 = 4,821.78 : x
  2. Step 2: Convert to fraction form
    8,800.91/12,145.14 = 4,821.78/x
  3. Step 3: Cross multiply
    8,800.91x = 12,145.14 × 4,821.78
  4. Step 4: Simplify right side
    8,800.91x = 58,561,193.15
  5. Step 5: Solve for x
    x = 58,561,193.15/8,800.91
  6. Step 6: Final answer
    x = 6,653.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.