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Finding the Fourth Proportional to 8,545.35, 12,819.04 and 8,078.79

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Solution

The fourth proportional to 8,545.35, 12,819.04 and 8,078.79 is: 12,119.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,545.35 : 12,819.04 = 8,078.79 : x
  2. Step 2: Convert to fraction form
    8,545.35/12,819.04 = 8,078.79/x
  3. Step 3: Cross multiply
    8,545.35x = 12,819.04 × 8,078.79
  4. Step 4: Simplify right side
    8,545.35x = 103,562,332.16
  5. Step 5: Solve for x
    x = 103,562,332.16/8,545.35
  6. Step 6: Final answer
    x = 12,119.14

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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.