Home / 2,153.28-3,221.42-2,137.49

Finding the Fourth Proportional to 2,153.28, 3,221.42 and 2,137.49

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Solution

The fourth proportional to 2,153.28, 3,221.42 and 2,137.49 is: 3,197.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,153.28 : 3,221.42 = 2,137.49 : x
  2. Step 2: Convert to fraction form
    2,153.28/3,221.42 = 2,137.49/x
  3. Step 3: Cross multiply
    2,153.28x = 3,221.42 × 2,137.49
  4. Step 4: Simplify right side
    2,153.28x = 6,885,750.34
  5. Step 5: Solve for x
    x = 6,885,750.34/2,153.28
  6. Step 6: Final answer
    x = 3,197.79

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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.