Home / 3,876.08-5,349.02-2,107.72

Finding the Fourth Proportional to 3,876.08, 5,349.02 and 2,107.72

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Solution

The fourth proportional to 3,876.08, 5,349.02 and 2,107.72 is: 2,908.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,876.08 : 5,349.02 = 2,107.72 : x
  2. Step 2: Convert to fraction form
    3,876.08/5,349.02 = 2,107.72/x
  3. Step 3: Cross multiply
    3,876.08x = 5,349.02 × 2,107.72
  4. Step 4: Simplify right side
    3,876.08x = 11,274,236.43
  5. Step 5: Solve for x
    x = 11,274,236.43/3,876.08
  6. Step 6: Final answer
    x = 2,908.67

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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.