Home / 2,170.92-3,256.56-938.36

Finding the Fourth Proportional to 2,170.92, 3,256.56 and 938.36

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Solution

The fourth proportional to 2,170.92, 3,256.56 and 938.36 is: 1,407.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,170.92 : 3,256.56 = 938.36 : x
  2. Step 2: Convert to fraction form
    2,170.92/3,256.56 = 938.36/x
  3. Step 3: Cross multiply
    2,170.92x = 3,256.56 × 938.36
  4. Step 4: Simplify right side
    2,170.92x = 3,055,825.64
  5. Step 5: Solve for x
    x = 3,055,825.64/2,170.92
  6. Step 6: Final answer
    x = 1,407.62

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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.