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Finding the Fourth Proportional to 8,462.72, 12,645.80 and 6,340.48

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Solution

The fourth proportional to 8,462.72, 12,645.80 and 6,340.48 is: 9,474.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,462.72 : 12,645.80 = 6,340.48 : x
  2. Step 2: Convert to fraction form
    8,462.72/12,645.80 = 6,340.48/x
  3. Step 3: Cross multiply
    8,462.72x = 12,645.80 × 6,340.48
  4. Step 4: Simplify right side
    8,462.72x = 80,180,441.98
  5. Step 5: Solve for x
    x = 80,180,441.98/8,462.72
  6. Step 6: Final answer
    x = 9,474.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.