Home / 2,153.20-3,229.80-1,788.70

Finding the Fourth Proportional to 2,153.20, 3,229.80 and 1,788.70

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Solution

The fourth proportional to 2,153.20, 3,229.80 and 1,788.70 is: 2,683.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,153.20 : 3,229.80 = 1,788.70 : x
  2. Step 2: Convert to fraction form
    2,153.20/3,229.80 = 1,788.70/x
  3. Step 3: Cross multiply
    2,153.20x = 3,229.80 × 1,788.70
  4. Step 4: Simplify right side
    2,153.20x = 5,777,143.26
  5. Step 5: Solve for x
    x = 5,777,143.26/2,153.20
  6. Step 6: Final answer
    x = 2,683.05

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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.