Home / 2,208.38-3,314.08-909.84

Finding the Fourth Proportional to 2,208.38, 3,314.08 and 909.84

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Solution

The fourth proportional to 2,208.38, 3,314.08 and 909.84 is: 1,365.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,208.38 : 3,314.08 = 909.84 : x
  2. Step 2: Convert to fraction form
    2,208.38/3,314.08 = 909.84/x
  3. Step 3: Cross multiply
    2,208.38x = 3,314.08 × 909.84
  4. Step 4: Simplify right side
    2,208.38x = 3,015,296.11
  5. Step 5: Solve for x
    x = 3,015,296.11/2,208.38
  6. Step 6: Final answer
    x = 1,365.39

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1.5x scale

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.