Home / 3,902.20-5,384.82-2,969.08

Finding the Fourth Proportional to 3,902.20, 5,384.82 and 2,969.08

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Solution

The fourth proportional to 3,902.20, 5,384.82 and 2,969.08 is: 4,097.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,902.20 : 5,384.82 = 2,969.08 : x
  2. Step 2: Convert to fraction form
    3,902.20/5,384.82 = 2,969.08/x
  3. Step 3: Cross multiply
    3,902.20x = 5,384.82 × 2,969.08
  4. Step 4: Simplify right side
    3,902.20x = 15,987,961.37
  5. Step 5: Solve for x
    x = 15,987,961.37/3,902.20
  6. Step 6: Final answer
    x = 4,097.17

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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.