Home / 3,911.40-5,397.22-2,338.92

Finding the Fourth Proportional to 3,911.40, 5,397.22 and 2,338.92

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Solution

The fourth proportional to 3,911.40, 5,397.22 and 2,338.92 is: 3,227.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,911.40 : 5,397.22 = 2,338.92 : x
  2. Step 2: Convert to fraction form
    3,911.40/5,397.22 = 2,338.92/x
  3. Step 3: Cross multiply
    3,911.40x = 5,397.22 × 2,338.92
  4. Step 4: Simplify right side
    3,911.40x = 12,623,665.80
  5. Step 5: Solve for x
    x = 12,623,665.80/3,911.40
  6. Step 6: Final answer
    x = 3,227.40

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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.