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Finding the Fourth Proportional to 8,872.61, 12,244.80 and 5,146.61

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Solution

The fourth proportional to 8,872.61, 12,244.80 and 5,146.61 is: 7,102.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,872.61 : 12,244.80 = 5,146.61 : x
  2. Step 2: Convert to fraction form
    8,872.61/12,244.80 = 5,146.61/x
  3. Step 3: Cross multiply
    8,872.61x = 12,244.80 × 5,146.61
  4. Step 4: Simplify right side
    8,872.61x = 63,019,148.90
  5. Step 5: Solve for x
    x = 63,019,148.90/8,872.61
  6. Step 6: Final answer
    x = 7,102.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.