Home / 3,426.18-5,139.30-829.14

Finding the Fourth Proportional to 3,426.18, 5,139.30 and 829.14

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Solution

The fourth proportional to 3,426.18, 5,139.30 and 829.14 is: 1,243.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,426.18 : 5,139.30 = 829.14 : x
  2. Step 2: Convert to fraction form
    3,426.18/5,139.30 = 829.14/x
  3. Step 3: Cross multiply
    3,426.18x = 5,139.30 × 829.14
  4. Step 4: Simplify right side
    3,426.18x = 4,261,199.20
  5. Step 5: Solve for x
    x = 4,261,199.20/3,426.18
  6. Step 6: Final answer
    x = 1,243.72

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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.