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Finding the Fourth Proportional to 8,601.06, 12,900.57 and 3,860.74

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Solution

The fourth proportional to 8,601.06, 12,900.57 and 3,860.74 is: 5,790.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,601.06 : 12,900.57 = 3,860.74 : x
  2. Step 2: Convert to fraction form
    8,601.06/12,900.57 = 3,860.74/x
  3. Step 3: Cross multiply
    8,601.06x = 12,900.57 × 3,860.74
  4. Step 4: Simplify right side
    8,601.06x = 49,805,711.99
  5. Step 5: Solve for x
    x = 49,805,711.99/8,601.06
  6. Step 6: Final answer
    x = 5,790.65

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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.