Home / 1,481.85-2,222.64-386.15

Finding the Fourth Proportional to 1,481.85, 2,222.64 and 386.15

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Solution

The fourth proportional to 1,481.85, 2,222.64 and 386.15 is: 579.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,481.85 : 2,222.64 = 386.15 : x
  2. Step 2: Convert to fraction form
    1,481.85/2,222.64 = 386.15/x
  3. Step 3: Cross multiply
    1,481.85x = 2,222.64 × 386.15
  4. Step 4: Simplify right side
    1,481.85x = 858,261.32
  5. Step 5: Solve for x
    x = 858,261.32/1,481.85
  6. Step 6: Final answer
    x = 579.18

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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.