Home / 7,081.78-9,772.97-3,937.96

Finding the Fourth Proportional to 7,081.78, 9,772.97 and 3,937.96

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Solution

The fourth proportional to 7,081.78, 9,772.97 and 3,937.96 is: 5,434.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,081.78 : 9,772.97 = 3,937.96 : x
  2. Step 2: Convert to fraction form
    7,081.78/9,772.97 = 3,937.96/x
  3. Step 3: Cross multiply
    7,081.78x = 9,772.97 × 3,937.96
  4. Step 4: Simplify right side
    7,081.78x = 38,485,564.94
  5. Step 5: Solve for x
    x = 38,485,564.94/7,081.78
  6. Step 6: Final answer
    x = 5,434.45

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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.