Home / 2,171.56-3,255.29-1,972.68

Finding the Fourth Proportional to 2,171.56, 3,255.29 and 1,972.68

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Solution

The fourth proportional to 2,171.56, 3,255.29 and 1,972.68 is: 2,957.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,171.56 : 3,255.29 = 1,972.68 : x
  2. Step 2: Convert to fraction form
    2,171.56/3,255.29 = 1,972.68/x
  3. Step 3: Cross multiply
    2,171.56x = 3,255.29 × 1,972.68
  4. Step 4: Simplify right side
    2,171.56x = 6,421,645.48
  5. Step 5: Solve for x
    x = 6,421,645.48/2,171.56
  6. Step 6: Final answer
    x = 2,957.16

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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.