Home / 3,876.96-5,351.84-2,758.08

Finding the Fourth Proportional to 3,876.96, 5,351.84 and 2,758.08

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Solution

The fourth proportional to 3,876.96, 5,351.84 and 2,758.08 is: 3,807.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,876.96 : 5,351.84 = 2,758.08 : x
  2. Step 2: Convert to fraction form
    3,876.96/5,351.84 = 2,758.08/x
  3. Step 3: Cross multiply
    3,876.96x = 5,351.84 × 2,758.08
  4. Step 4: Simplify right side
    3,876.96x = 14,760,802.87
  5. Step 5: Solve for x
    x = 14,760,802.87/3,876.96
  6. Step 6: Final answer
    x = 3,807.31

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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.