Home / 3,960.38-5,465.32-2,388.62

Finding the Fourth Proportional to 3,960.38, 5,465.32 and 2,388.62

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Solution

The fourth proportional to 3,960.38, 5,465.32 and 2,388.62 is: 3,296.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,960.38 : 5,465.32 = 2,388.62 : x
  2. Step 2: Convert to fraction form
    3,960.38/5,465.32 = 2,388.62/x
  3. Step 3: Cross multiply
    3,960.38x = 5,465.32 × 2,388.62
  4. Step 4: Simplify right side
    3,960.38x = 13,054,539.36
  5. Step 5: Solve for x
    x = 13,054,539.36/3,960.38
  6. Step 6: Final answer
    x = 3,296.29

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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.