Home / 3,867.40-5,337.12-2,274.15

Finding the Fourth Proportional to 3,867.40, 5,337.12 and 2,274.15

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Solution

The fourth proportional to 3,867.40, 5,337.12 and 2,274.15 is: 3,138.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,867.40 : 5,337.12 = 2,274.15 : x
  2. Step 2: Convert to fraction form
    3,867.40/5,337.12 = 2,274.15/x
  3. Step 3: Cross multiply
    3,867.40x = 5,337.12 × 2,274.15
  4. Step 4: Simplify right side
    3,867.40x = 12,137,405.79
  5. Step 5: Solve for x
    x = 12,137,405.79/3,867.40
  6. Step 6: Final answer
    x = 3,138.39

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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.