Home / 2,987.52-4,481.68-1,039.47

Finding the Fourth Proportional to 2,987.52, 4,481.68 and 1,039.47

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Solution

The fourth proportional to 2,987.52, 4,481.68 and 1,039.47 is: 1,559.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,987.52 : 4,481.68 = 1,039.47 : x
  2. Step 2: Convert to fraction form
    2,987.52/4,481.68 = 1,039.47/x
  3. Step 3: Cross multiply
    2,987.52x = 4,481.68 × 1,039.47
  4. Step 4: Simplify right side
    2,987.52x = 4,658,571.91
  5. Step 5: Solve for x
    x = 4,658,571.91/2,987.52
  6. Step 6: Final answer
    x = 1,559.34

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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.