Home / 2,828.20-4,242.42-880.48

Finding the Fourth Proportional to 2,828.20, 4,242.42 and 880.48

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Solution

The fourth proportional to 2,828.20, 4,242.42 and 880.48 is: 1,320.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,828.20 : 4,242.42 = 880.48 : x
  2. Step 2: Convert to fraction form
    2,828.20/4,242.42 = 880.48/x
  3. Step 3: Cross multiply
    2,828.20x = 4,242.42 × 880.48
  4. Step 4: Simplify right side
    2,828.20x = 3,735,365.96
  5. Step 5: Solve for x
    x = 3,735,365.96/2,828.20
  6. Step 6: Final answer
    x = 1,320.76

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1.5x scale

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.