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Finding the Fourth Proportional to 8,912.76, 13,368.87 and 4,236.15

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Solution

The fourth proportional to 8,912.76, 13,368.87 and 4,236.15 is: 6,354.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,912.76 : 13,368.87 = 4,236.15 : x
  2. Step 2: Convert to fraction form
    8,912.76/13,368.87 = 4,236.15/x
  3. Step 3: Cross multiply
    8,912.76x = 13,368.87 × 4,236.15
  4. Step 4: Simplify right side
    8,912.76x = 56,632,538.65
  5. Step 5: Solve for x
    x = 56,632,538.65/8,912.76
  6. Step 6: Final answer
    x = 6,354.10

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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.