Home / 1,372.11-1,894.40-1,224.49

Finding the Fourth Proportional to 1,372.11, 1,894.40 and 1,224.49

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Solution

The fourth proportional to 1,372.11, 1,894.40 and 1,224.49 is: 1,690.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,372.11 : 1,894.40 = 1,224.49 : x
  2. Step 2: Convert to fraction form
    1,372.11/1,894.40 = 1,224.49/x
  3. Step 3: Cross multiply
    1,372.11x = 1,894.40 × 1,224.49
  4. Step 4: Simplify right side
    1,372.11x = 2,319,667.73
  5. Step 5: Solve for x
    x = 2,319,667.73/1,372.11
  6. Step 6: Final answer
    x = 1,690.58

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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.