Home / 3,681.84-5,082.68-2,109.62

Finding the Fourth Proportional to 3,681.84, 5,082.68 and 2,109.62

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Solution

The fourth proportional to 3,681.84, 5,082.68 and 2,109.62 is: 2,912.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,681.84 : 5,082.68 = 2,109.62 : x
  2. Step 2: Convert to fraction form
    3,681.84/5,082.68 = 2,109.62/x
  3. Step 3: Cross multiply
    3,681.84x = 5,082.68 × 2,109.62
  4. Step 4: Simplify right side
    3,681.84x = 10,722,523.38
  5. Step 5: Solve for x
    x = 10,722,523.38/3,681.84
  6. Step 6: Final answer
    x = 2,912.27

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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.