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Finding the Fourth Proportional to 8,880.30, 12,247.29 and 5,342.85

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Solution

The fourth proportional to 8,880.30, 12,247.29 and 5,342.85 is: 7,368.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,880.30 : 12,247.29 = 5,342.85 : x
  2. Step 2: Convert to fraction form
    8,880.30/12,247.29 = 5,342.85/x
  3. Step 3: Cross multiply
    8,880.30x = 12,247.29 × 5,342.85
  4. Step 4: Simplify right side
    8,880.30x = 65,435,433.38
  5. Step 5: Solve for x
    x = 65,435,433.38/8,880.30
  6. Step 6: Final answer
    x = 7,368.61

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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.