Home / 5,310.91-7,331.05-3,988.44

Finding the Fourth Proportional to 5,310.91, 7,331.05 and 3,988.44

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Solution

The fourth proportional to 5,310.91, 7,331.05 and 3,988.44 is: 5,505.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,310.91 : 7,331.05 = 3,988.44 : x
  2. Step 2: Convert to fraction form
    5,310.91/7,331.05 = 3,988.44/x
  3. Step 3: Cross multiply
    5,310.91x = 7,331.05 × 3,988.44
  4. Step 4: Simplify right side
    5,310.91x = 29,239,453.06
  5. Step 5: Solve for x
    x = 29,239,453.06/5,310.91
  6. Step 6: Final answer
    x = 5,505.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.