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Finding the Fourth Proportional to 3,669.70, 5,508.60 and 2,851.60

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Solution

The fourth proportional to 3,669.70, 5,508.60 and 2,851.60 is: 4,280.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,669.70 : 5,508.60 = 2,851.60 : x
  2. Step 2: Convert to fraction form
    3,669.70/5,508.60 = 2,851.60/x
  3. Step 3: Cross multiply
    3,669.70x = 5,508.60 × 2,851.60
  4. Step 4: Simplify right side
    3,669.70x = 15,708,323.76
  5. Step 5: Solve for x
    x = 15,708,323.76/3,669.70
  6. Step 6: Final answer
    x = 4,280.55

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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.