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Finding the Fourth Proportional to 8,480.92, 12,659.66 and 7,787.56

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Solution

The fourth proportional to 8,480.92, 12,659.66 and 7,787.56 is: 11,624.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,480.92 : 12,659.66 = 7,787.56 : x
  2. Step 2: Convert to fraction form
    8,480.92/12,659.66 = 7,787.56/x
  3. Step 3: Cross multiply
    8,480.92x = 12,659.66 × 7,787.56
  4. Step 4: Simplify right side
    8,480.92x = 98,587,861.83
  5. Step 5: Solve for x
    x = 98,587,861.83/8,480.92
  6. Step 6: Final answer
    x = 11,624.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.