Home / 2,758.36-4,138.76-1,118.11

Finding the Fourth Proportional to 2,758.36, 4,138.76 and 1,118.11

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Solution

The fourth proportional to 2,758.36, 4,138.76 and 1,118.11 is: 1,677.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,758.36 : 4,138.76 = 1,118.11 : x
  2. Step 2: Convert to fraction form
    2,758.36/4,138.76 = 1,118.11/x
  3. Step 3: Cross multiply
    2,758.36x = 4,138.76 × 1,118.11
  4. Step 4: Simplify right side
    2,758.36x = 4,627,588.94
  5. Step 5: Solve for x
    x = 4,627,588.94/2,758.36
  6. Step 6: Final answer
    x = 1,677.66

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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.