Home / 3,867.42-5,336.80-2,189.17

Finding the Fourth Proportional to 3,867.42, 5,336.80 and 2,189.17

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Solution

The fourth proportional to 3,867.42, 5,336.80 and 2,189.17 is: 3,020.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,867.42 : 5,336.80 = 2,189.17 : x
  2. Step 2: Convert to fraction form
    3,867.42/5,336.80 = 2,189.17/x
  3. Step 3: Cross multiply
    3,867.42x = 5,336.80 × 2,189.17
  4. Step 4: Simplify right side
    3,867.42x = 11,683,143.64
  5. Step 5: Solve for x
    x = 11,683,143.64/3,867.42
  6. Step 6: Final answer
    x = 3,020.91

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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.