Home / 2,387.96-3,581.80-1,217.60

Finding the Fourth Proportional to 2,387.96, 3,581.80 and 1,217.60

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Solution

The fourth proportional to 2,387.96, 3,581.80 and 1,217.60 is: 1,826.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,387.96 : 3,581.80 = 1,217.60 : x
  2. Step 2: Convert to fraction form
    2,387.96/3,581.80 = 1,217.60/x
  3. Step 3: Cross multiply
    2,387.96x = 3,581.80 × 1,217.60
  4. Step 4: Simplify right side
    2,387.96x = 4,361,199.68
  5. Step 5: Solve for x
    x = 4,361,199.68/2,387.96
  6. Step 6: Final answer
    x = 1,826.33

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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.