Home / 3,908.90-5,394.36-2,140.58

Finding the Fourth Proportional to 3,908.90, 5,394.36 and 2,140.58

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Solution

The fourth proportional to 3,908.90, 5,394.36 and 2,140.58 is: 2,954.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,908.90 : 5,394.36 = 2,140.58 : x
  2. Step 2: Convert to fraction form
    3,908.90/5,394.36 = 2,140.58/x
  3. Step 3: Cross multiply
    3,908.90x = 5,394.36 × 2,140.58
  4. Step 4: Simplify right side
    3,908.90x = 11,547,059.13
  5. Step 5: Solve for x
    x = 11,547,059.13/3,908.90
  6. Step 6: Final answer
    x = 2,954.04

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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.