Home / 2,218.55-3,328.98-986.84

Finding the Fourth Proportional to 2,218.55, 3,328.98 and 986.84

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Solution

The fourth proportional to 2,218.55, 3,328.98 and 986.84 is: 1,480.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,218.55 : 3,328.98 = 986.84 : x
  2. Step 2: Convert to fraction form
    2,218.55/3,328.98 = 986.84/x
  3. Step 3: Cross multiply
    2,218.55x = 3,328.98 × 986.84
  4. Step 4: Simplify right side
    2,218.55x = 3,285,170.62
  5. Step 5: Solve for x
    x = 3,285,170.62/2,218.55
  6. Step 6: Final answer
    x = 1,480.77

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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.