Home / 2,218.74-3,328.49-986.18

Finding the Fourth Proportional to 2,218.74, 3,328.49 and 986.18

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Solution

The fourth proportional to 2,218.74, 3,328.49 and 986.18 is: 1,479.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,218.74 : 3,328.49 = 986.18 : x
  2. Step 2: Convert to fraction form
    2,218.74/3,328.49 = 986.18/x
  3. Step 3: Cross multiply
    2,218.74x = 3,328.49 × 986.18
  4. Step 4: Simplify right side
    2,218.74x = 3,282,476.09
  5. Step 5: Solve for x
    x = 3,282,476.09/2,218.74
  6. Step 6: Final answer
    x = 1,479.43

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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.