Home / 1,989.44-2,982.40-1,015.04

Finding the Fourth Proportional to 1,989.44, 2,982.40 and 1,015.04

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Solution

The fourth proportional to 1,989.44, 2,982.40 and 1,015.04 is: 1,521.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,989.44 : 2,982.40 = 1,015.04 : x
  2. Step 2: Convert to fraction form
    1,989.44/2,982.40 = 1,015.04/x
  3. Step 3: Cross multiply
    1,989.44x = 2,982.40 × 1,015.04
  4. Step 4: Simplify right side
    1,989.44x = 3,027,255.30
  5. Step 5: Solve for x
    x = 3,027,255.30/1,989.44
  6. Step 6: Final answer
    x = 1,521.66

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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.