Home / 2,648.60-3,974.27-1,089.75

Finding the Fourth Proportional to 2,648.60, 3,974.27 and 1,089.75

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Solution

The fourth proportional to 2,648.60, 3,974.27 and 1,089.75 is: 1,635.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,648.60 : 3,974.27 = 1,089.75 : x
  2. Step 2: Convert to fraction form
    2,648.60/3,974.27 = 1,089.75/x
  3. Step 3: Cross multiply
    2,648.60x = 3,974.27 × 1,089.75
  4. Step 4: Simplify right side
    2,648.60x = 4,330,970.19
  5. Step 5: Solve for x
    x = 4,330,970.19/2,648.60
  6. Step 6: Final answer
    x = 1,635.19

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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.