Home / 3,907.04-5,391.64-2,138.63

Finding the Fourth Proportional to 3,907.04, 5,391.64 and 2,138.63

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Solution

The fourth proportional to 3,907.04, 5,391.64 and 2,138.63 is: 2,951.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,907.04 : 5,391.64 = 2,138.63 : x
  2. Step 2: Convert to fraction form
    3,907.04/5,391.64 = 2,138.63/x
  3. Step 3: Cross multiply
    3,907.04x = 5,391.64 × 2,138.63
  4. Step 4: Simplify right side
    3,907.04x = 11,530,723.05
  5. Step 5: Solve for x
    x = 11,530,723.05/3,907.04
  6. Step 6: Final answer
    x = 2,951.27

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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.