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Finding the Fourth Proportional to 8,650.13, 12,975.17 and 3,103.79

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Solution

The fourth proportional to 8,650.13, 12,975.17 and 3,103.79 is: 4,655.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,650.13 : 12,975.17 = 3,103.79 : x
  2. Step 2: Convert to fraction form
    8,650.13/12,975.17 = 3,103.79/x
  3. Step 3: Cross multiply
    8,650.13x = 12,975.17 × 3,103.79
  4. Step 4: Simplify right side
    8,650.13x = 40,272,122.50
  5. Step 5: Solve for x
    x = 40,272,122.50/8,650.13
  6. Step 6: Final answer
    x = 4,655.67

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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.