Home / 3,858.71-5,324.72-2,180.30

Finding the Fourth Proportional to 3,858.71, 5,324.72 and 2,180.30

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Solution

The fourth proportional to 3,858.71, 5,324.72 and 2,180.30 is: 3,008.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,858.71 : 5,324.72 = 2,180.30 : x
  2. Step 2: Convert to fraction form
    3,858.71/5,324.72 = 2,180.30/x
  3. Step 3: Cross multiply
    3,858.71x = 5,324.72 × 2,180.30
  4. Step 4: Simplify right side
    3,858.71x = 11,609,449.49
  5. Step 5: Solve for x
    x = 11,609,449.49/3,858.71
  6. Step 6: Final answer
    x = 3,008.64

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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.