Home / 3,876.34-5,349.40-2,107.94

Finding the Fourth Proportional to 3,876.34, 5,349.40 and 2,107.94

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Solution

The fourth proportional to 3,876.34, 5,349.40 and 2,107.94 is: 2,908.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,876.34 : 5,349.40 = 2,107.94 : x
  2. Step 2: Convert to fraction form
    3,876.34/5,349.40 = 2,107.94/x
  3. Step 3: Cross multiply
    3,876.34x = 5,349.40 × 2,107.94
  4. Step 4: Simplify right side
    3,876.34x = 11,276,214.24
  5. Step 5: Solve for x
    x = 11,276,214.24/3,876.34
  6. Step 6: Final answer
    x = 2,908.98

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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.