Home / 1,958.11-2,700.90-1,118.59

Finding the Fourth Proportional to 1,958.11, 2,700.90 and 1,118.59

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Solution

The fourth proportional to 1,958.11, 2,700.90 and 1,118.59 is: 1,542.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,958.11 : 2,700.90 = 1,118.59 : x
  2. Step 2: Convert to fraction form
    1,958.11/2,700.90 = 1,118.59/x
  3. Step 3: Cross multiply
    1,958.11x = 2,700.90 × 1,118.59
  4. Step 4: Simplify right side
    1,958.11x = 3,021,192.98
  5. Step 5: Solve for x
    x = 3,021,192.98/1,958.11
  6. Step 6: Final answer
    x = 1,542.91

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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.