Home / 2,213.21-3,320.60-980.73

Finding the Fourth Proportional to 2,213.21, 3,320.60 and 980.73

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Solution

The fourth proportional to 2,213.21, 3,320.60 and 980.73 is: 1,471.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,213.21 : 3,320.60 = 980.73 : x
  2. Step 2: Convert to fraction form
    2,213.21/3,320.60 = 980.73/x
  3. Step 3: Cross multiply
    2,213.21x = 3,320.60 × 980.73
  4. Step 4: Simplify right side
    2,213.21x = 3,256,607.13
  5. Step 5: Solve for x
    x = 3,256,607.13/2,213.21
  6. Step 6: Final answer
    x = 1,471.44

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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.