Home / 3,426.21-5,139.27-829.13

Finding the Fourth Proportional to 3,426.21, 5,139.27 and 829.13

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Solution

The fourth proportional to 3,426.21, 5,139.27 and 829.13 is: 1,243.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,426.21 : 5,139.27 = 829.13 : x
  2. Step 2: Convert to fraction form
    3,426.21/5,139.27 = 829.13/x
  3. Step 3: Cross multiply
    3,426.21x = 5,139.27 × 829.13
  4. Step 4: Simplify right side
    3,426.21x = 4,261,097.24
  5. Step 5: Solve for x
    x = 4,261,097.24/3,426.21
  6. Step 6: Final answer
    x = 1,243.68

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Double scale
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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.