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Finding the Fourth Proportional to 3,470.80, 5,206.20 and 3,254.80

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Solution

The fourth proportional to 3,470.80, 5,206.20 and 3,254.80 is: 4,882.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,470.80 : 5,206.20 = 3,254.80 : x
  2. Step 2: Convert to fraction form
    3,470.80/5,206.20 = 3,254.80/x
  3. Step 3: Cross multiply
    3,470.80x = 5,206.20 × 3,254.80
  4. Step 4: Simplify right side
    3,470.80x = 16,945,139.76
  5. Step 5: Solve for x
    x = 16,945,139.76/3,470.80
  6. Step 6: Final answer
    x = 4,882.20

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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.