Home / 3,681.33-5,082.12-2,840.15

Finding the Fourth Proportional to 3,681.33, 5,082.12 and 2,840.15

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Solution

The fourth proportional to 3,681.33, 5,082.12 and 2,840.15 is: 3,920.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,681.33 : 5,082.12 = 2,840.15 : x
  2. Step 2: Convert to fraction form
    3,681.33/5,082.12 = 2,840.15/x
  3. Step 3: Cross multiply
    3,681.33x = 5,082.12 × 2,840.15
  4. Step 4: Simplify right side
    3,681.33x = 14,433,983.12
  5. Step 5: Solve for x
    x = 14,433,983.12/3,681.33
  6. Step 6: Final answer
    x = 3,920.86

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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.