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Finding the Fourth Proportional to 2,873.28, 4,301.28 and 1,638.48

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Solution

The fourth proportional to 2,873.28, 4,301.28 and 1,638.48 is: 2,452.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,873.28 : 4,301.28 = 1,638.48 : x
  2. Step 2: Convert to fraction form
    2,873.28/4,301.28 = 1,638.48/x
  3. Step 3: Cross multiply
    2,873.28x = 4,301.28 × 1,638.48
  4. Step 4: Simplify right side
    2,873.28x = 7,047,561.25
  5. Step 5: Solve for x
    x = 7,047,561.25/2,873.28
  6. Step 6: Final answer
    x = 2,452.79

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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.