Home / 3,972-5,481.36-2,574.75

Finding the Fourth Proportional to 3,972, 5,481.36 and 2,574.75

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Solution

The fourth proportional to 3,972, 5,481.36 and 2,574.75 is: 3,553.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,972 : 5,481.36 = 2,574.75 : x
  2. Step 2: Convert to fraction form
    3,972/5,481.36 = 2,574.75/x
  3. Step 3: Cross multiply
    3,972x = 5,481.36 × 2,574.75
  4. Step 4: Simplify right side
    3,972x = 14,113,131.66
  5. Step 5: Solve for x
    x = 14,113,131.66/3,972
  6. Step 6: Final answer
    x = 3,553.16

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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.