Home / 1,372.98-2,057.82-1,219.20

Finding the Fourth Proportional to 1,372.98, 2,057.82 and 1,219.20

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Solution

The fourth proportional to 1,372.98, 2,057.82 and 1,219.20 is: 1,827.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,372.98 : 2,057.82 = 1,219.20 : x
  2. Step 2: Convert to fraction form
    1,372.98/2,057.82 = 1,219.20/x
  3. Step 3: Cross multiply
    1,372.98x = 2,057.82 × 1,219.20
  4. Step 4: Simplify right side
    1,372.98x = 2,508,894.14
  5. Step 5: Solve for x
    x = 2,508,894.14/1,372.98
  6. Step 6: Final answer
    x = 1,827.33

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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.