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Finding the Fourth Proportional to 8,821.10, 13,227.80 and 2,580.98

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Solution

The fourth proportional to 8,821.10, 13,227.80 and 2,580.98 is: 3,870.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,821.10 : 13,227.80 = 2,580.98 : x
  2. Step 2: Convert to fraction form
    8,821.10/13,227.80 = 2,580.98/x
  3. Step 3: Cross multiply
    8,821.10x = 13,227.80 × 2,580.98
  4. Step 4: Simplify right side
    8,821.10x = 34,140,608.20
  5. Step 5: Solve for x
    x = 34,140,608.20/8,821.10
  6. Step 6: Final answer
    x = 3,870.34

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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.