Home / 3,961.80-5,465.16-3,216.60

Finding the Fourth Proportional to 3,961.80, 5,465.16 and 3,216.60

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Solution

The fourth proportional to 3,961.80, 5,465.16 and 3,216.60 is: 4,437.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,961.80 : 5,465.16 = 3,216.60 : x
  2. Step 2: Convert to fraction form
    3,961.80/5,465.16 = 3,216.60/x
  3. Step 3: Cross multiply
    3,961.80x = 5,465.16 × 3,216.60
  4. Step 4: Simplify right side
    3,961.80x = 17,579,233.66
  5. Step 5: Solve for x
    x = 17,579,233.66/3,961.80
  6. Step 6: Final answer
    x = 4,437.18

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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.