Home / 8,251.72-12,378.78-2,407.60

Finding the Fourth Proportional to 8,251.72, 12,378.78 and 2,407.60

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Solution

The fourth proportional to 8,251.72, 12,378.78 and 2,407.60 is: 3,611.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,251.72 : 12,378.78 = 2,407.60 : x
  2. Step 2: Convert to fraction form
    8,251.72/12,378.78 = 2,407.60/x
  3. Step 3: Cross multiply
    8,251.72x = 12,378.78 × 2,407.60
  4. Step 4: Simplify right side
    8,251.72x = 29,803,150.73
  5. Step 5: Solve for x
    x = 29,803,150.73/8,251.72
  6. Step 6: Final answer
    x = 3,611.75

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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.