Home / 1,248.12-1,722.41-855.27

Finding the Fourth Proportional to 1,248.12, 1,722.41 and 855.27

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Solution

The fourth proportional to 1,248.12, 1,722.41 and 855.27 is: 1,180.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,248.12 : 1,722.41 = 855.27 : x
  2. Step 2: Convert to fraction form
    1,248.12/1,722.41 = 855.27/x
  3. Step 3: Cross multiply
    1,248.12x = 1,722.41 × 855.27
  4. Step 4: Simplify right side
    1,248.12x = 1,473,125.60
  5. Step 5: Solve for x
    x = 1,473,125.60/1,248.12
  6. Step 6: Final answer
    x = 1,180.28

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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.