Home / 1,992.04-2,750.36-1,247.12

Finding the Fourth Proportional to 1,992.04, 2,750.36 and 1,247.12

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Solution

The fourth proportional to 1,992.04, 2,750.36 and 1,247.12 is: 1,721.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,992.04 : 2,750.36 = 1,247.12 : x
  2. Step 2: Convert to fraction form
    1,992.04/2,750.36 = 1,247.12/x
  3. Step 3: Cross multiply
    1,992.04x = 2,750.36 × 1,247.12
  4. Step 4: Simplify right side
    1,992.04x = 3,430,028.96
  5. Step 5: Solve for x
    x = 3,430,028.96/1,992.04
  6. Step 6: Final answer
    x = 1,721.87

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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.