Home / 5,286.20-7,929.30-4,767.80

Finding the Fourth Proportional to 5,286.20, 7,929.30 and 4,767.80

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Solution

The fourth proportional to 5,286.20, 7,929.30 and 4,767.80 is: 7,151.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,286.20 : 7,929.30 = 4,767.80 : x
  2. Step 2: Convert to fraction form
    5,286.20/7,929.30 = 4,767.80/x
  3. Step 3: Cross multiply
    5,286.20x = 7,929.30 × 4,767.80
  4. Step 4: Simplify right side
    5,286.20x = 37,805,316.54
  5. Step 5: Solve for x
    x = 37,805,316.54/5,286.20
  6. Step 6: Final answer
    x = 7,151.70

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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.