Home / 2,319.60-3,481.48-1,087.72

Finding the Fourth Proportional to 2,319.60, 3,481.48 and 1,087.72

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Solution

The fourth proportional to 2,319.60, 3,481.48 and 1,087.72 is: 1,632.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,319.60 : 3,481.48 = 1,087.72 : x
  2. Step 2: Convert to fraction form
    2,319.60/3,481.48 = 1,087.72/x
  3. Step 3: Cross multiply
    2,319.60x = 3,481.48 × 1,087.72
  4. Step 4: Simplify right side
    2,319.60x = 3,786,875.43
  5. Step 5: Solve for x
    x = 3,786,875.43/2,319.60
  6. Step 6: Final answer
    x = 1,632.56

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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.