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Finding the Fourth Proportional to 8,013.76, 12,019.71 and 2,170.81

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Solution

The fourth proportional to 8,013.76, 12,019.71 and 2,170.81 is: 3,255.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,013.76 : 12,019.71 = 2,170.81 : x
  2. Step 2: Convert to fraction form
    8,013.76/12,019.71 = 2,170.81/x
  3. Step 3: Cross multiply
    8,013.76x = 12,019.71 × 2,170.81
  4. Step 4: Simplify right side
    8,013.76x = 26,092,506.67
  5. Step 5: Solve for x
    x = 26,092,506.67/8,013.76
  6. Step 6: Final answer
    x = 3,255.96

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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.