Home / 2,892.20-3,991.26-1,697.90

Finding the Fourth Proportional to 2,892.20, 3,991.26 and 1,697.90

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Solution

The fourth proportional to 2,892.20, 3,991.26 and 1,697.90 is: 2,343.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,892.20 : 3,991.26 = 1,697.90 : x
  2. Step 2: Convert to fraction form
    2,892.20/3,991.26 = 1,697.90/x
  3. Step 3: Cross multiply
    2,892.20x = 3,991.26 × 1,697.90
  4. Step 4: Simplify right side
    2,892.20x = 6,776,760.35
  5. Step 5: Solve for x
    x = 6,776,760.35/2,892.20
  6. Step 6: Final answer
    x = 2,343.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.