Home / 3,426.24-5,139.36-829.18

Finding the Fourth Proportional to 3,426.24, 5,139.36 and 829.18

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Solution

The fourth proportional to 3,426.24, 5,139.36 and 829.18 is: 1,243.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,426.24 : 5,139.36 = 829.18 : x
  2. Step 2: Convert to fraction form
    3,426.24/5,139.36 = 829.18/x
  3. Step 3: Cross multiply
    3,426.24x = 5,139.36 × 829.18
  4. Step 4: Simplify right side
    3,426.24x = 4,261,441.68
  5. Step 5: Solve for x
    x = 4,261,441.68/3,426.24
  6. Step 6: Final answer
    x = 1,243.77

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Double scale
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Similar ratio
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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.