Home / 1,372.32-1,892.97-1,206.54

Finding the Fourth Proportional to 1,372.32, 1,892.97 and 1,206.54

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Solution

The fourth proportional to 1,372.32, 1,892.97 and 1,206.54 is: 1,664.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,372.32 : 1,892.97 = 1,206.54 : x
  2. Step 2: Convert to fraction form
    1,372.32/1,892.97 = 1,206.54/x
  3. Step 3: Cross multiply
    1,372.32x = 1,892.97 × 1,206.54
  4. Step 4: Simplify right side
    1,372.32x = 2,283,944.02
  5. Step 5: Solve for x
    x = 2,283,944.02/1,372.32
  6. Step 6: Final answer
    x = 1,664.29

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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.