Home / 3,941.60-5,901.46-1,987.88

Finding the Fourth Proportional to 3,941.60, 5,901.46 and 1,987.88

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Solution

The fourth proportional to 3,941.60, 5,901.46 and 1,987.88 is: 2,976.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,941.60 : 5,901.46 = 1,987.88 : x
  2. Step 2: Convert to fraction form
    3,941.60/5,901.46 = 1,987.88/x
  3. Step 3: Cross multiply
    3,941.60x = 5,901.46 × 1,987.88
  4. Step 4: Simplify right side
    3,941.60x = 11,731,394.30
  5. Step 5: Solve for x
    x = 11,731,394.30/3,941.60
  6. Step 6: Final answer
    x = 2,976.30

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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.