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Finding the Fourth Proportional to 2,752.20, 4,128.71 and 902.97

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Solution

The fourth proportional to 2,752.20, 4,128.71 and 902.97 is: 1,354.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,752.20 : 4,128.71 = 902.97 : x
  2. Step 2: Convert to fraction form
    2,752.20/4,128.71 = 902.97/x
  3. Step 3: Cross multiply
    2,752.20x = 4,128.71 × 902.97
  4. Step 4: Simplify right side
    2,752.20x = 3,728,096.75
  5. Step 5: Solve for x
    x = 3,728,096.75/2,752.20
  6. Step 6: Final answer
    x = 1,354.59

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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.