Home / 3,873.52-5,345.36-2,171.91

Finding the Fourth Proportional to 3,873.52, 5,345.36 and 2,171.91

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Solution

The fourth proportional to 3,873.52, 5,345.36 and 2,171.91 is: 2,997.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,873.52 : 5,345.36 = 2,171.91 : x
  2. Step 2: Convert to fraction form
    3,873.52/5,345.36 = 2,171.91/x
  3. Step 3: Cross multiply
    3,873.52x = 5,345.36 × 2,171.91
  4. Step 4: Simplify right side
    3,873.52x = 11,609,627.47
  5. Step 5: Solve for x
    x = 11,609,627.47/3,873.52
  6. Step 6: Final answer
    x = 2,997.18

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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.