Home / 3,987.40-5,496.92-2,660.62

Finding the Fourth Proportional to 3,987.40, 5,496.92 and 2,660.62

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Solution

The fourth proportional to 3,987.40, 5,496.92 and 2,660.62 is: 3,667.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,987.40 : 5,496.92 = 2,660.62 : x
  2. Step 2: Convert to fraction form
    3,987.40/5,496.92 = 2,660.62/x
  3. Step 3: Cross multiply
    3,987.40x = 5,496.92 × 2,660.62
  4. Step 4: Simplify right side
    3,987.40x = 14,625,215.29
  5. Step 5: Solve for x
    x = 14,625,215.29/3,987.40
  6. Step 6: Final answer
    x = 3,667.86

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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.