Home / 3,891.12-5,367.08-2,318

Finding the Fourth Proportional to 3,891.12, 5,367.08 and 2,318

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Solution

The fourth proportional to 3,891.12, 5,367.08 and 2,318 is: 3,197.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,891.12 : 5,367.08 = 2,318 : x
  2. Step 2: Convert to fraction form
    3,891.12/5,367.08 = 2,318/x
  3. Step 3: Cross multiply
    3,891.12x = 5,367.08 × 2,318
  4. Step 4: Simplify right side
    3,891.12x = 12,440,891.44
  5. Step 5: Solve for x
    x = 12,440,891.44/3,891.12
  6. Step 6: Final answer
    x = 3,197.25

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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.