Home / 3,867.34-5,336.85-2,188.70

Finding the Fourth Proportional to 3,867.34, 5,336.85 and 2,188.70

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Solution

The fourth proportional to 3,867.34, 5,336.85 and 2,188.70 is: 3,020.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,867.34 : 5,336.85 = 2,188.70 : x
  2. Step 2: Convert to fraction form
    3,867.34/5,336.85 = 2,188.70/x
  3. Step 3: Cross multiply
    3,867.34x = 5,336.85 × 2,188.70
  4. Step 4: Simplify right side
    3,867.34x = 11,680,763.60
  5. Step 5: Solve for x
    x = 11,680,763.60/3,867.34
  6. Step 6: Final answer
    x = 3,020.36

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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.