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Finding the Fourth Proportional to 4,065.80, 5,610.80 and 2,202.80

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Solution

The fourth proportional to 4,065.80, 5,610.80 and 2,202.80 is: 3,039.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,065.80 : 5,610.80 = 2,202.80 : x
  2. Step 2: Convert to fraction form
    4,065.80/5,610.80 = 2,202.80/x
  3. Step 3: Cross multiply
    4,065.80x = 5,610.80 × 2,202.80
  4. Step 4: Simplify right side
    4,065.80x = 12,359,470.24
  5. Step 5: Solve for x
    x = 12,359,470.24/4,065.80
  6. Step 6: Final answer
    x = 3,039.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.