Home / 3,218.06-4,827.38-909.56

Finding the Fourth Proportional to 3,218.06, 4,827.38 and 909.56

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Solution

The fourth proportional to 3,218.06, 4,827.38 and 909.56 is: 1,364.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,218.06 : 4,827.38 = 909.56 : x
  2. Step 2: Convert to fraction form
    3,218.06/4,827.38 = 909.56/x
  3. Step 3: Cross multiply
    3,218.06x = 4,827.38 × 909.56
  4. Step 4: Simplify right side
    3,218.06x = 4,390,799.27
  5. Step 5: Solve for x
    x = 4,390,799.27/3,218.06
  6. Step 6: Final answer
    x = 1,364.42

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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.