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Finding the Fourth Proportional to 8,871.85, 13,309.80 and 3,028.38

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Solution

The fourth proportional to 8,871.85, 13,309.80 and 3,028.38 is: 4,543.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,871.85 : 13,309.80 = 3,028.38 : x
  2. Step 2: Convert to fraction form
    8,871.85/13,309.80 = 3,028.38/x
  3. Step 3: Cross multiply
    8,871.85x = 13,309.80 × 3,028.38
  4. Step 4: Simplify right side
    8,871.85x = 40,307,132.12
  5. Step 5: Solve for x
    x = 40,307,132.12/8,871.85
  6. Step 6: Final answer
    x = 4,543.26

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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.