Home / 1,997.86-2,757.09-1,113.75

Finding the Fourth Proportional to 1,997.86, 2,757.09 and 1,113.75

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Solution

The fourth proportional to 1,997.86, 2,757.09 and 1,113.75 is: 1,537.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,997.86 : 2,757.09 = 1,113.75 : x
  2. Step 2: Convert to fraction form
    1,997.86/2,757.09 = 1,113.75/x
  3. Step 3: Cross multiply
    1,997.86x = 2,757.09 × 1,113.75
  4. Step 4: Simplify right side
    1,997.86x = 3,070,708.99
  5. Step 5: Solve for x
    x = 3,070,708.99/1,997.86
  6. Step 6: Final answer
    x = 1,537.00

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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.