Home / 3,423.59-5,135.39-826.53

Finding the Fourth Proportional to 3,423.59, 5,135.39 and 826.53

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Solution

The fourth proportional to 3,423.59, 5,135.39 and 826.53 is: 1,239.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,423.59 : 5,135.39 = 826.53 : x
  2. Step 2: Convert to fraction form
    3,423.59/5,135.39 = 826.53/x
  3. Step 3: Cross multiply
    3,423.59x = 5,135.39 × 826.53
  4. Step 4: Simplify right side
    3,423.59x = 4,244,549.76
  5. Step 5: Solve for x
    x = 4,244,549.76/3,423.59
  6. Step 6: Final answer
    x = 1,239.80

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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.