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Finding the Fourth Proportional to 10,660.79, 15,992.13 and 3,645.68

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Solution

The fourth proportional to 10,660.79, 15,992.13 and 3,645.68 is: 5,468.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,660.79 : 15,992.13 = 3,645.68 : x
  2. Step 2: Convert to fraction form
    10,660.79/15,992.13 = 3,645.68/x
  3. Step 3: Cross multiply
    10,660.79x = 15,992.13 × 3,645.68
  4. Step 4: Simplify right side
    10,660.79x = 58,302,257.14
  5. Step 5: Solve for x
    x = 58,302,257.14/10,660.79
  6. Step 6: Final answer
    x = 5,468.85

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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.