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Finding the Fourth Proportional to 8,672.46, 13,000.77 and 3,124.50

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Solution

The fourth proportional to 8,672.46, 13,000.77 and 3,124.50 is: 4,683.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,672.46 : 13,000.77 = 3,124.50 : x
  2. Step 2: Convert to fraction form
    8,672.46/13,000.77 = 3,124.50/x
  3. Step 3: Cross multiply
    8,672.46x = 13,000.77 × 3,124.50
  4. Step 4: Simplify right side
    8,672.46x = 40,620,905.87
  5. Step 5: Solve for x
    x = 40,620,905.87/8,672.46
  6. Step 6: Final answer
    x = 4,683.90

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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.