Home / 3,681.15-5,081.85-2,189.55

Finding the Fourth Proportional to 3,681.15, 5,081.85 and 2,189.55

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Solution

The fourth proportional to 3,681.15, 5,081.85 and 2,189.55 is: 3,022.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,681.15 : 5,081.85 = 2,189.55 : x
  2. Step 2: Convert to fraction form
    3,681.15/5,081.85 = 2,189.55/x
  3. Step 3: Cross multiply
    3,681.15x = 5,081.85 × 2,189.55
  4. Step 4: Simplify right side
    3,681.15x = 11,126,964.67
  5. Step 5: Solve for x
    x = 11,126,964.67/3,681.15
  6. Step 6: Final answer
    x = 3,022.69

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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.