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Finding the Fourth Proportional to 8,911.10, 13,365.86 and 2,672.50

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Solution

The fourth proportional to 8,911.10, 13,365.86 and 2,672.50 is: 4,008.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,911.10 : 13,365.86 = 2,672.50 : x
  2. Step 2: Convert to fraction form
    8,911.10/13,365.86 = 2,672.50/x
  3. Step 3: Cross multiply
    8,911.10x = 13,365.86 × 2,672.50
  4. Step 4: Simplify right side
    8,911.10x = 35,720,260.85
  5. Step 5: Solve for x
    x = 35,720,260.85/8,911.10
  6. Step 6: Final answer
    x = 4,008.51

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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.