Home / 3,918.39-5,407.52-2,149.95

Finding the Fourth Proportional to 3,918.39, 5,407.52 and 2,149.95

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Solution

The fourth proportional to 3,918.39, 5,407.52 and 2,149.95 is: 2,967.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,918.39 : 5,407.52 = 2,149.95 : x
  2. Step 2: Convert to fraction form
    3,918.39/5,407.52 = 2,149.95/x
  3. Step 3: Cross multiply
    3,918.39x = 5,407.52 × 2,149.95
  4. Step 4: Simplify right side
    3,918.39x = 11,625,897.62
  5. Step 5: Solve for x
    x = 11,625,897.62/3,918.39
  6. Step 6: Final answer
    x = 2,967.01

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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.