Home / 3,815.25-5,271.78-2,938.62

Finding the Fourth Proportional to 3,815.25, 5,271.78 and 2,938.62

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Solution

The fourth proportional to 3,815.25, 5,271.78 and 2,938.62 is: 4,060.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,815.25 : 5,271.78 = 2,938.62 : x
  2. Step 2: Convert to fraction form
    3,815.25/5,271.78 = 2,938.62/x
  3. Step 3: Cross multiply
    3,815.25x = 5,271.78 × 2,938.62
  4. Step 4: Simplify right side
    3,815.25x = 15,491,758.14
  5. Step 5: Solve for x
    x = 15,491,758.14/3,815.25
  6. Step 6: Final answer
    x = 4,060.48

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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.