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Finding the Fourth Proportional to 8,560.74, 12,842.76 and 3,880.86

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Solution

The fourth proportional to 8,560.74, 12,842.76 and 3,880.86 is: 5,822.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,560.74 : 12,842.76 = 3,880.86 : x
  2. Step 2: Convert to fraction form
    8,560.74/12,842.76 = 3,880.86/x
  3. Step 3: Cross multiply
    8,560.74x = 12,842.76 × 3,880.86
  4. Step 4: Simplify right side
    8,560.74x = 49,840,953.57
  5. Step 5: Solve for x
    x = 49,840,953.57/8,560.74
  6. Step 6: Final answer
    x = 5,822.04

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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.