Home / 2,218.36-3,328.20-658.41

Finding the Fourth Proportional to 2,218.36, 3,328.20 and 658.41

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Solution

The fourth proportional to 2,218.36, 3,328.20 and 658.41 is: 987.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,218.36 : 3,328.20 = 658.41 : x
  2. Step 2: Convert to fraction form
    2,218.36/3,328.20 = 658.41/x
  3. Step 3: Cross multiply
    2,218.36x = 3,328.20 × 658.41
  4. Step 4: Simplify right side
    2,218.36x = 2,191,320.16
  5. Step 5: Solve for x
    x = 2,191,320.16/2,218.36
  6. Step 6: Final answer
    x = 987.81

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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.