Home / 3,144.39-4,715.31-1,388.14

Finding the Fourth Proportional to 3,144.39, 4,715.31 and 1,388.14

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Solution

The fourth proportional to 3,144.39, 4,715.31 and 1,388.14 is: 2,081.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,144.39 : 4,715.31 = 1,388.14 : x
  2. Step 2: Convert to fraction form
    3,144.39/4,715.31 = 1,388.14/x
  3. Step 3: Cross multiply
    3,144.39x = 4,715.31 × 1,388.14
  4. Step 4: Simplify right side
    3,144.39x = 6,545,503.84
  5. Step 5: Solve for x
    x = 6,545,503.84/3,144.39
  6. Step 6: Final answer
    x = 2,081.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.