Home / 3,858.68-5,325.17-2,180.16

Finding the Fourth Proportional to 3,858.68, 5,325.17 and 2,180.16

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Solution

The fourth proportional to 3,858.68, 5,325.17 and 2,180.16 is: 3,008.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,858.68 : 5,325.17 = 2,180.16 : x
  2. Step 2: Convert to fraction form
    3,858.68/5,325.17 = 2,180.16/x
  3. Step 3: Cross multiply
    3,858.68x = 5,325.17 × 2,180.16
  4. Step 4: Simplify right side
    3,858.68x = 11,609,711.73
  5. Step 5: Solve for x
    x = 11,609,711.73/3,858.68
  6. Step 6: Final answer
    x = 3,008.72

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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.