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Finding the Fourth Proportional to 8,865.99, 12,234.51 and 4,887.09

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Solution

The fourth proportional to 8,865.99, 12,234.51 and 4,887.09 is: 6,743.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,865.99 : 12,234.51 = 4,887.09 : x
  2. Step 2: Convert to fraction form
    8,865.99/12,234.51 = 4,887.09/x
  3. Step 3: Cross multiply
    8,865.99x = 12,234.51 × 4,887.09
  4. Step 4: Simplify right side
    8,865.99x = 59,791,151.48
  5. Step 5: Solve for x
    x = 59,791,151.48/8,865.99
  6. Step 6: Final answer
    x = 6,743.88

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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.