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Finding the Fourth Proportional to 8,915.79, 13,373.76 and 2,675.86

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Solution

The fourth proportional to 8,915.79, 13,373.76 and 2,675.86 is: 4,013.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,915.79 : 13,373.76 = 2,675.86 : x
  2. Step 2: Convert to fraction form
    8,915.79/13,373.76 = 2,675.86/x
  3. Step 3: Cross multiply
    8,915.79x = 13,373.76 × 2,675.86
  4. Step 4: Simplify right side
    8,915.79x = 35,786,309.43
  5. Step 5: Solve for x
    x = 35,786,309.43/8,915.79
  6. Step 6: Final answer
    x = 4,013.81

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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.