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Finding the Fourth Proportional to 8,767.95, 12,078.57 and 7,504.95

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Solution

The fourth proportional to 8,767.95, 12,078.57 and 7,504.95 is: 10,338.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,767.95 : 12,078.57 = 7,504.95 : x
  2. Step 2: Convert to fraction form
    8,767.95/12,078.57 = 7,504.95/x
  3. Step 3: Cross multiply
    8,767.95x = 12,078.57 × 7,504.95
  4. Step 4: Simplify right side
    8,767.95x = 90,649,063.92
  5. Step 5: Solve for x
    x = 90,649,063.92/8,767.95
  6. Step 6: Final answer
    x = 10,338.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.