Home / 3,867.17-5,336.28-2,188.31

Finding the Fourth Proportional to 3,867.17, 5,336.28 and 2,188.31

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Solution

The fourth proportional to 3,867.17, 5,336.28 and 2,188.31 is: 3,019.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,867.17 : 5,336.28 = 2,188.31 : x
  2. Step 2: Convert to fraction form
    3,867.17/5,336.28 = 2,188.31/x
  3. Step 3: Cross multiply
    3,867.17x = 5,336.28 × 2,188.31
  4. Step 4: Simplify right side
    3,867.17x = 11,677,408.21
  5. Step 5: Solve for x
    x = 11,677,408.21/3,867.17
  6. Step 6: Final answer
    x = 3,019.63

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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.