Home / 5,218.84-7,202.82-3,123.64

Finding the Fourth Proportional to 5,218.84, 7,202.82 and 3,123.64

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Solution

The fourth proportional to 5,218.84, 7,202.82 and 3,123.64 is: 4,311.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,218.84 : 7,202.82 = 3,123.64 : x
  2. Step 2: Convert to fraction form
    5,218.84/7,202.82 = 3,123.64/x
  3. Step 3: Cross multiply
    5,218.84x = 7,202.82 × 3,123.64
  4. Step 4: Simplify right side
    5,218.84x = 22,499,016.66
  5. Step 5: Solve for x
    x = 22,499,016.66/5,218.84
  6. Step 6: Final answer
    x = 4,311.11

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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.