Home / 3,681.57-5,081.40-2,189.46

Finding the Fourth Proportional to 3,681.57, 5,081.40 and 2,189.46

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Solution

The fourth proportional to 3,681.57, 5,081.40 and 2,189.46 is: 3,021.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,681.57 : 5,081.40 = 2,189.46 : x
  2. Step 2: Convert to fraction form
    3,681.57/5,081.40 = 2,189.46/x
  3. Step 3: Cross multiply
    3,681.57x = 5,081.40 × 2,189.46
  4. Step 4: Simplify right side
    3,681.57x = 11,125,522.04
  5. Step 5: Solve for x
    x = 11,125,522.04/3,681.57
  6. Step 6: Final answer
    x = 3,021.95

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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.