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Finding the Fourth Proportional to 8,672.14, 13,005.13 and 3,123.99

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Solution

The fourth proportional to 8,672.14, 13,005.13 and 3,123.99 is: 4,684.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,672.14 : 13,005.13 = 3,123.99 : x
  2. Step 2: Convert to fraction form
    8,672.14/13,005.13 = 3,123.99/x
  3. Step 3: Cross multiply
    8,672.14x = 13,005.13 × 3,123.99
  4. Step 4: Simplify right side
    8,672.14x = 40,627,896.07
  5. Step 5: Solve for x
    x = 40,627,896.07/8,672.14
  6. Step 6: Final answer
    x = 4,684.88

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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.