Home / 2,218.71-3,331.83-2,130.42

Finding the Fourth Proportional to 2,218.71, 3,331.83 and 2,130.42

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Solution

The fourth proportional to 2,218.71, 3,331.83 and 2,130.42 is: 3,199.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,218.71 : 3,331.83 = 2,130.42 : x
  2. Step 2: Convert to fraction form
    2,218.71/3,331.83 = 2,130.42/x
  3. Step 3: Cross multiply
    2,218.71x = 3,331.83 × 2,130.42
  4. Step 4: Simplify right side
    2,218.71x = 7,098,197.27
  5. Step 5: Solve for x
    x = 7,098,197.27/2,218.71
  6. Step 6: Final answer
    x = 3,199.25

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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.