Home / 1,248.36-1,872.13-415.23

Finding the Fourth Proportional to 1,248.36, 1,872.13 and 415.23

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Solution

The fourth proportional to 1,248.36, 1,872.13 and 415.23 is: 622.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,248.36 : 1,872.13 = 415.23 : x
  2. Step 2: Convert to fraction form
    1,248.36/1,872.13 = 415.23/x
  3. Step 3: Cross multiply
    1,248.36x = 1,872.13 × 415.23
  4. Step 4: Simplify right side
    1,248.36x = 777,364.54
  5. Step 5: Solve for x
    x = 777,364.54/1,248.36
  6. Step 6: Final answer
    x = 622.71

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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.