Home / 2,218.12-3,328.40-1,869.84

Finding the Fourth Proportional to 2,218.12, 3,328.40 and 1,869.84

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Solution

The fourth proportional to 2,218.12, 3,328.40 and 1,869.84 is: 2,805.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,218.12 : 3,328.40 = 1,869.84 : x
  2. Step 2: Convert to fraction form
    2,218.12/3,328.40 = 1,869.84/x
  3. Step 3: Cross multiply
    2,218.12x = 3,328.40 × 1,869.84
  4. Step 4: Simplify right side
    2,218.12x = 6,223,575.46
  5. Step 5: Solve for x
    x = 6,223,575.46/2,218.12
  6. Step 6: Final answer
    x = 2,805.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.