Home / 3,991.04-5,987.28-2,042.72

Finding the Fourth Proportional to 3,991.04, 5,987.28 and 2,042.72

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Solution

The fourth proportional to 3,991.04, 5,987.28 and 2,042.72 is: 3,064.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,991.04 : 5,987.28 = 2,042.72 : x
  2. Step 2: Convert to fraction form
    3,991.04/5,987.28 = 2,042.72/x
  3. Step 3: Cross multiply
    3,991.04x = 5,987.28 × 2,042.72
  4. Step 4: Simplify right side
    3,991.04x = 12,230,336.60
  5. Step 5: Solve for x
    x = 12,230,336.60/3,991.04
  6. Step 6: Final answer
    x = 3,064.45

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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.