Home / 2,287.16-3,430.44-987.56

Finding the Fourth Proportional to 2,287.16, 3,430.44 and 987.56

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Solution

The fourth proportional to 2,287.16, 3,430.44 and 987.56 is: 1,481.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,287.16 : 3,430.44 = 987.56 : x
  2. Step 2: Convert to fraction form
    2,287.16/3,430.44 = 987.56/x
  3. Step 3: Cross multiply
    2,287.16x = 3,430.44 × 987.56
  4. Step 4: Simplify right side
    2,287.16x = 3,387,765.33
  5. Step 5: Solve for x
    x = 3,387,765.33/2,287.16
  6. Step 6: Final answer
    x = 1,481.21

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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.