Home / 3,908.75-5,394.08-2,116.24

Finding the Fourth Proportional to 3,908.75, 5,394.08 and 2,116.24

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Solution

The fourth proportional to 3,908.75, 5,394.08 and 2,116.24 is: 2,920.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,908.75 : 5,394.08 = 2,116.24 : x
  2. Step 2: Convert to fraction form
    3,908.75/5,394.08 = 2,116.24/x
  3. Step 3: Cross multiply
    3,908.75x = 5,394.08 × 2,116.24
  4. Step 4: Simplify right side
    3,908.75x = 11,415,186.02
  5. Step 5: Solve for x
    x = 11,415,186.02/3,908.75
  6. Step 6: Final answer
    x = 2,920.42

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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.