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Finding the Fourth Proportional to 8,500.95, 12,718.62 and 8,479.08

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Solution

The fourth proportional to 8,500.95, 12,718.62 and 8,479.08 is: 12,685.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,500.95 : 12,718.62 = 8,479.08 : x
  2. Step 2: Convert to fraction form
    8,500.95/12,718.62 = 8,479.08/x
  3. Step 3: Cross multiply
    8,500.95x = 12,718.62 × 8,479.08
  4. Step 4: Simplify right side
    8,500.95x = 107,842,196.47
  5. Step 5: Solve for x
    x = 107,842,196.47/8,500.95
  6. Step 6: Final answer
    x = 12,685.90

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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.