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Finding the Fourth Proportional to 8,342.68, 12,520.19 and 6,718.83

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Solution

The fourth proportional to 8,342.68, 12,520.19 and 6,718.83 is: 10,083.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,342.68 : 12,520.19 = 6,718.83 : x
  2. Step 2: Convert to fraction form
    8,342.68/12,520.19 = 6,718.83/x
  3. Step 3: Cross multiply
    8,342.68x = 12,520.19 × 6,718.83
  4. Step 4: Simplify right side
    8,342.68x = 84,120,931.98
  5. Step 5: Solve for x
    x = 84,120,931.98/8,342.68
  6. Step 6: Final answer
    x = 10,083.20

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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.