Home / 5,100.30-7,650.54-1,979.97

Finding the Fourth Proportional to 5,100.30, 7,650.54 and 1,979.97

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Solution

The fourth proportional to 5,100.30, 7,650.54 and 1,979.97 is: 2,969.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,100.30 : 7,650.54 = 1,979.97 : x
  2. Step 2: Convert to fraction form
    5,100.30/7,650.54 = 1,979.97/x
  3. Step 3: Cross multiply
    5,100.30x = 7,650.54 × 1,979.97
  4. Step 4: Simplify right side
    5,100.30x = 15,147,839.68
  5. Step 5: Solve for x
    x = 15,147,839.68/5,100.30
  6. Step 6: Final answer
    x = 2,969.99

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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.