Home / 2,717.20-4,075.66-961.66

Finding the Fourth Proportional to 2,717.20, 4,075.66 and 961.66

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Solution

The fourth proportional to 2,717.20, 4,075.66 and 961.66 is: 1,442.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,717.20 : 4,075.66 = 961.66 : x
  2. Step 2: Convert to fraction form
    2,717.20/4,075.66 = 961.66/x
  3. Step 3: Cross multiply
    2,717.20x = 4,075.66 × 961.66
  4. Step 4: Simplify right side
    2,717.20x = 3,919,399.20
  5. Step 5: Solve for x
    x = 3,919,399.20/2,717.20
  6. Step 6: Final answer
    x = 1,442.44

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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.