Home / 1,972.42-2,721.40-1,226.41

Finding the Fourth Proportional to 1,972.42, 2,721.40 and 1,226.41

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Solution

The fourth proportional to 1,972.42, 2,721.40 and 1,226.41 is: 1,692.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,972.42 : 2,721.40 = 1,226.41 : x
  2. Step 2: Convert to fraction form
    1,972.42/2,721.40 = 1,226.41/x
  3. Step 3: Cross multiply
    1,972.42x = 2,721.40 × 1,226.41
  4. Step 4: Simplify right side
    1,972.42x = 3,337,542.30
  5. Step 5: Solve for x
    x = 3,337,542.30/1,972.42
  6. Step 6: Final answer
    x = 1,692.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.