Home / 2,643.20-3,960.96-1,181.44

Finding the Fourth Proportional to 2,643.20, 3,960.96 and 1,181.44

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Solution

The fourth proportional to 2,643.20, 3,960.96 and 1,181.44 is: 1,770.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,643.20 : 3,960.96 = 1,181.44 : x
  2. Step 2: Convert to fraction form
    2,643.20/3,960.96 = 1,181.44/x
  3. Step 3: Cross multiply
    2,643.20x = 3,960.96 × 1,181.44
  4. Step 4: Simplify right side
    2,643.20x = 4,679,636.58
  5. Step 5: Solve for x
    x = 4,679,636.58/2,643.20
  6. Step 6: Final answer
    x = 1,770.44

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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.