Home / 3,869.78-5,339.99-2,297.57

Finding the Fourth Proportional to 3,869.78, 5,339.99 and 2,297.57

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Solution

The fourth proportional to 3,869.78, 5,339.99 and 2,297.57 is: 3,170.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,869.78 : 5,339.99 = 2,297.57 : x
  2. Step 2: Convert to fraction form
    3,869.78/5,339.99 = 2,297.57/x
  3. Step 3: Cross multiply
    3,869.78x = 5,339.99 × 2,297.57
  4. Step 4: Simplify right side
    3,869.78x = 12,268,979.87
  5. Step 5: Solve for x
    x = 12,268,979.87/3,869.78
  6. Step 6: Final answer
    x = 3,170.46

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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.