Home / 2,215.60-3,319.80-1,632.40

Finding the Fourth Proportional to 2,215.60, 3,319.80 and 1,632.40

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Solution

The fourth proportional to 2,215.60, 3,319.80 and 1,632.40 is: 2,445.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,215.60 : 3,319.80 = 1,632.40 : x
  2. Step 2: Convert to fraction form
    2,215.60/3,319.80 = 1,632.40/x
  3. Step 3: Cross multiply
    2,215.60x = 3,319.80 × 1,632.40
  4. Step 4: Simplify right side
    2,215.60x = 5,419,241.52
  5. Step 5: Solve for x
    x = 5,419,241.52/2,215.60
  6. Step 6: Final answer
    x = 2,445.95

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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.