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Finding the Fourth Proportional to 3,166.80, 4,750.20 and 2,826.60

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Solution

The fourth proportional to 3,166.80, 4,750.20 and 2,826.60 is: 4,239.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,166.80 : 4,750.20 = 2,826.60 : x
  2. Step 2: Convert to fraction form
    3,166.80/4,750.20 = 2,826.60/x
  3. Step 3: Cross multiply
    3,166.80x = 4,750.20 × 2,826.60
  4. Step 4: Simplify right side
    3,166.80x = 13,426,915.32
  5. Step 5: Solve for x
    x = 13,426,915.32/3,166.80
  6. Step 6: Final answer
    x = 4,239.90

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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.