Home / 2,154.04-3,231.82-1,331.36

Finding the Fourth Proportional to 2,154.04, 3,231.82 and 1,331.36

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Solution

The fourth proportional to 2,154.04, 3,231.82 and 1,331.36 is: 1,997.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,154.04 : 3,231.82 = 1,331.36 : x
  2. Step 2: Convert to fraction form
    2,154.04/3,231.82 = 1,331.36/x
  3. Step 3: Cross multiply
    2,154.04x = 3,231.82 × 1,331.36
  4. Step 4: Simplify right side
    2,154.04x = 4,302,715.88
  5. Step 5: Solve for x
    x = 4,302,715.88/2,154.04
  6. Step 6: Final answer
    x = 1,997.51

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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.