Home / 3,426.48-5,139.72-961.56

Finding the Fourth Proportional to 3,426.48, 5,139.72 and 961.56

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Solution

The fourth proportional to 3,426.48, 5,139.72 and 961.56 is: 1,442.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,426.48 : 5,139.72 = 961.56 : x
  2. Step 2: Convert to fraction form
    3,426.48/5,139.72 = 961.56/x
  3. Step 3: Cross multiply
    3,426.48x = 5,139.72 × 961.56
  4. Step 4: Simplify right side
    3,426.48x = 4,942,149.16
  5. Step 5: Solve for x
    x = 4,942,149.16/3,426.48
  6. Step 6: Final answer
    x = 1,442.34

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1.5x scale

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.