Home / 3,918.35-5,407.23-2,149.94

Finding the Fourth Proportional to 3,918.35, 5,407.23 and 2,149.94

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Solution

The fourth proportional to 3,918.35, 5,407.23 and 2,149.94 is: 2,966.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,918.35 : 5,407.23 = 2,149.94 : x
  2. Step 2: Convert to fraction form
    3,918.35/5,407.23 = 2,149.94/x
  3. Step 3: Cross multiply
    3,918.35x = 5,407.23 × 2,149.94
  4. Step 4: Simplify right side
    3,918.35x = 11,625,233.58
  5. Step 5: Solve for x
    x = 11,625,233.58/3,918.35
  6. Step 6: Final answer
    x = 2,966.87

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1.5x scale

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.