Home / 3,987.24-5,971.80-3,292.20

Finding the Fourth Proportional to 3,987.24, 5,971.80 and 3,292.20

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Solution

The fourth proportional to 3,987.24, 5,971.80 and 3,292.20 is: 4,930.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,987.24 : 5,971.80 = 3,292.20 : x
  2. Step 2: Convert to fraction form
    3,987.24/5,971.80 = 3,292.20/x
  3. Step 3: Cross multiply
    3,987.24x = 5,971.80 × 3,292.20
  4. Step 4: Simplify right side
    3,987.24x = 19,660,359.96
  5. Step 5: Solve for x
    x = 19,660,359.96/3,987.24
  6. Step 6: Final answer
    x = 4,930.82

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1.5x scale

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.