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Finding the Fourth Proportional to 2,717.28, 3,749.80 and 1,475.28

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Solution

The fourth proportional to 2,717.28, 3,749.80 and 1,475.28 is: 2,035.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,717.28 : 3,749.80 = 1,475.28 : x
  2. Step 2: Convert to fraction form
    2,717.28/3,749.80 = 1,475.28/x
  3. Step 3: Cross multiply
    2,717.28x = 3,749.80 × 1,475.28
  4. Step 4: Simplify right side
    2,717.28x = 5,532,004.94
  5. Step 5: Solve for x
    x = 5,532,004.94/2,717.28
  6. Step 6: Final answer
    x = 2,035.86

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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.