Home / 3,427.08-5,140.32-961.80

Finding the Fourth Proportional to 3,427.08, 5,140.32 and 961.80

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Solution

The fourth proportional to 3,427.08, 5,140.32 and 961.80 is: 1,442.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,427.08 : 5,140.32 = 961.80 : x
  2. Step 2: Convert to fraction form
    3,427.08/5,140.32 = 961.80/x
  3. Step 3: Cross multiply
    3,427.08x = 5,140.32 × 961.80
  4. Step 4: Simplify right side
    3,427.08x = 4,943,959.78
  5. Step 5: Solve for x
    x = 4,943,959.78/3,427.08
  6. Step 6: Final answer
    x = 1,442.62

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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.