Home / 3,876.42-5,349.32-2,107.98

Finding the Fourth Proportional to 3,876.42, 5,349.32 and 2,107.98

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Solution

The fourth proportional to 3,876.42, 5,349.32 and 2,107.98 is: 2,908.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,876.42 : 5,349.32 = 2,107.98 : x
  2. Step 2: Convert to fraction form
    3,876.42/5,349.32 = 2,107.98/x
  3. Step 3: Cross multiply
    3,876.42x = 5,349.32 × 2,107.98
  4. Step 4: Simplify right side
    3,876.42x = 11,276,259.57
  5. Step 5: Solve for x
    x = 11,276,259.57/3,876.42
  6. Step 6: Final answer
    x = 2,908.94

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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.