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Finding the Fourth Proportional to 8,648.76, 12,972.60 and 3,450.90

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Solution

The fourth proportional to 8,648.76, 12,972.60 and 3,450.90 is: 5,176.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,648.76 : 12,972.60 = 3,450.90 : x
  2. Step 2: Convert to fraction form
    8,648.76/12,972.60 = 3,450.90/x
  3. Step 3: Cross multiply
    8,648.76x = 12,972.60 × 3,450.90
  4. Step 4: Simplify right side
    8,648.76x = 44,767,145.34
  5. Step 5: Solve for x
    x = 44,767,145.34/8,648.76
  6. Step 6: Final answer
    x = 5,176.13

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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.