Home / 5,208.35-7,185-3,218.18

Finding the Fourth Proportional to 5,208.35, 7,185 and 3,218.18

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Solution

The fourth proportional to 5,208.35, 7,185 and 3,218.18 is: 4,439.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,208.35 : 7,185 = 3,218.18 : x
  2. Step 2: Convert to fraction form
    5,208.35/7,185 = 3,218.18/x
  3. Step 3: Cross multiply
    5,208.35x = 7,185 × 3,218.18
  4. Step 4: Simplify right side
    5,208.35x = 23,122,623.30
  5. Step 5: Solve for x
    x = 23,122,623.30/5,208.35
  6. Step 6: Final answer
    x = 4,439.53

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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.