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Finding the Fourth Proportional to 8,670.87, 13,003.49 and 2,826.11

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Solution

The fourth proportional to 8,670.87, 13,003.49 and 2,826.11 is: 4,238.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,670.87 : 13,003.49 = 2,826.11 : x
  2. Step 2: Convert to fraction form
    8,670.87/13,003.49 = 2,826.11/x
  3. Step 3: Cross multiply
    8,670.87x = 13,003.49 × 2,826.11
  4. Step 4: Simplify right side
    8,670.87x = 36,749,213.98
  5. Step 5: Solve for x
    x = 36,749,213.98/8,670.87
  6. Step 6: Final answer
    x = 4,238.24

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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.