Home / 1,997.40-2,756.12-1,113.06

Finding the Fourth Proportional to 1,997.40, 2,756.12 and 1,113.06

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Solution

The fourth proportional to 1,997.40, 2,756.12 and 1,113.06 is: 1,535.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,997.40 : 2,756.12 = 1,113.06 : x
  2. Step 2: Convert to fraction form
    1,997.40/2,756.12 = 1,113.06/x
  3. Step 3: Cross multiply
    1,997.40x = 2,756.12 × 1,113.06
  4. Step 4: Simplify right side
    1,997.40x = 3,067,726.93
  5. Step 5: Solve for x
    x = 3,067,726.93/1,997.40
  6. Step 6: Final answer
    x = 1,535.86

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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.