Home / 2,729.61-4,090.99-1,167.78

Finding the Fourth Proportional to 2,729.61, 4,090.99 and 1,167.78

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Solution

The fourth proportional to 2,729.61, 4,090.99 and 1,167.78 is: 1,750.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,729.61 : 4,090.99 = 1,167.78 : x
  2. Step 2: Convert to fraction form
    2,729.61/4,090.99 = 1,167.78/x
  3. Step 3: Cross multiply
    2,729.61x = 4,090.99 × 1,167.78
  4. Step 4: Simplify right side
    2,729.61x = 4,777,376.30
  5. Step 5: Solve for x
    x = 4,777,376.30/2,729.61
  6. Step 6: Final answer
    x = 1,750.20

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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.