Home / 3,781.07-5,217.87-2,125.07

Finding the Fourth Proportional to 3,781.07, 5,217.87 and 2,125.07

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Solution

The fourth proportional to 3,781.07, 5,217.87 and 2,125.07 is: 2,932.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,781.07 : 5,217.87 = 2,125.07 : x
  2. Step 2: Convert to fraction form
    3,781.07/5,217.87 = 2,125.07/x
  3. Step 3: Cross multiply
    3,781.07x = 5,217.87 × 2,125.07
  4. Step 4: Simplify right side
    3,781.07x = 11,088,302.29
  5. Step 5: Solve for x
    x = 11,088,302.29/3,781.07
  6. Step 6: Final answer
    x = 2,932.59

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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.