Home / 3,861.41-5,329.03-2,160.05

Finding the Fourth Proportional to 3,861.41, 5,329.03 and 2,160.05

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Solution

The fourth proportional to 3,861.41, 5,329.03 and 2,160.05 is: 2,981.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,861.41 : 5,329.03 = 2,160.05 : x
  2. Step 2: Convert to fraction form
    3,861.41/5,329.03 = 2,160.05/x
  3. Step 3: Cross multiply
    3,861.41x = 5,329.03 × 2,160.05
  4. Step 4: Simplify right side
    3,861.41x = 11,510,979.17
  5. Step 5: Solve for x
    x = 11,510,979.17/3,861.41
  6. Step 6: Final answer
    x = 2,981.03

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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.