Home / 3,987.32-5,977.38-2,577.92

Finding the Fourth Proportional to 3,987.32, 5,977.38 and 2,577.92

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Solution

The fourth proportional to 3,987.32, 5,977.38 and 2,577.92 is: 3,864.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,987.32 : 5,977.38 = 2,577.92 : x
  2. Step 2: Convert to fraction form
    3,987.32/5,977.38 = 2,577.92/x
  3. Step 3: Cross multiply
    3,987.32x = 5,977.38 × 2,577.92
  4. Step 4: Simplify right side
    3,987.32x = 15,409,207.45
  5. Step 5: Solve for x
    x = 15,409,207.45/3,987.32
  6. Step 6: Final answer
    x = 3,864.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.