Home / 2,651.20-3,972.96-1,189.44

Finding the Fourth Proportional to 2,651.20, 3,972.96 and 1,189.44

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Solution

The fourth proportional to 2,651.20, 3,972.96 and 1,189.44 is: 1,782.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,651.20 : 3,972.96 = 1,189.44 : x
  2. Step 2: Convert to fraction form
    2,651.20/3,972.96 = 1,189.44/x
  3. Step 3: Cross multiply
    2,651.20x = 3,972.96 × 1,189.44
  4. Step 4: Simplify right side
    2,651.20x = 4,725,597.54
  5. Step 5: Solve for x
    x = 4,725,597.54/2,651.20
  6. Step 6: Final answer
    x = 1,782.44

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Double scale
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Similar ratio
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1.5x scale

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.