Home / 3,426.30-5,139.77-961.11

Finding the Fourth Proportional to 3,426.30, 5,139.77 and 961.11

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Solution

The fourth proportional to 3,426.30, 5,139.77 and 961.11 is: 1,441.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,426.30 : 5,139.77 = 961.11 : x
  2. Step 2: Convert to fraction form
    3,426.30/5,139.77 = 961.11/x
  3. Step 3: Cross multiply
    3,426.30x = 5,139.77 × 961.11
  4. Step 4: Simplify right side
    3,426.30x = 4,939,871.50
  5. Step 5: Solve for x
    x = 4,939,871.50/3,426.30
  6. Step 6: Final answer
    x = 1,441.75

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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.