Home / 1,997.87-2,757.06-1,113.66

Finding the Fourth Proportional to 1,997.87, 2,757.06 and 1,113.66

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Solution

The fourth proportional to 1,997.87, 2,757.06 and 1,113.66 is: 1,536.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,997.87 : 2,757.06 = 1,113.66 : x
  2. Step 2: Convert to fraction form
    1,997.87/2,757.06 = 1,113.66/x
  3. Step 3: Cross multiply
    1,997.87x = 2,757.06 × 1,113.66
  4. Step 4: Simplify right side
    1,997.87x = 3,070,427.44
  5. Step 5: Solve for x
    x = 3,070,427.44/1,997.87
  6. Step 6: Final answer
    x = 1,536.85

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1.5x scale

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.