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Finding the Fourth Proportional to 8,610.18, 12,922.18 and 4,451.40

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Solution

The fourth proportional to 8,610.18, 12,922.18 and 4,451.40 is: 6,680.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,610.18 : 12,922.18 = 4,451.40 : x
  2. Step 2: Convert to fraction form
    8,610.18/12,922.18 = 4,451.40/x
  3. Step 3: Cross multiply
    8,610.18x = 12,922.18 × 4,451.40
  4. Step 4: Simplify right side
    8,610.18x = 57,521,792.05
  5. Step 5: Solve for x
    x = 57,521,792.05/8,610.18
  6. Step 6: Final answer
    x = 6,680.67

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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.