Home / 2,419.80-3,630.52-1,187.26

Finding the Fourth Proportional to 2,419.80, 3,630.52 and 1,187.26

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Solution

The fourth proportional to 2,419.80, 3,630.52 and 1,187.26 is: 1,781.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,419.80 : 3,630.52 = 1,187.26 : x
  2. Step 2: Convert to fraction form
    2,419.80/3,630.52 = 1,187.26/x
  3. Step 3: Cross multiply
    2,419.80x = 3,630.52 × 1,187.26
  4. Step 4: Simplify right side
    2,419.80x = 4,310,371.18
  5. Step 5: Solve for x
    x = 4,310,371.18/2,419.80
  6. Step 6: Final answer
    x = 1,781.29

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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.