Home / 2,987.50-4,481.91-1,039.66

Finding the Fourth Proportional to 2,987.50, 4,481.91 and 1,039.66

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Solution

The fourth proportional to 2,987.50, 4,481.91 and 1,039.66 is: 1,559.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,987.50 : 4,481.91 = 1,039.66 : x
  2. Step 2: Convert to fraction form
    2,987.50/4,481.91 = 1,039.66/x
  3. Step 3: Cross multiply
    2,987.50x = 4,481.91 × 1,039.66
  4. Step 4: Simplify right side
    2,987.50x = 4,659,662.55
  5. Step 5: Solve for x
    x = 4,659,662.55/2,987.50
  6. Step 6: Final answer
    x = 1,559.72

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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.