Home / 2,422.58-3,631.38-1,189.58

Finding the Fourth Proportional to 2,422.58, 3,631.38 and 1,189.58

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Solution

The fourth proportional to 2,422.58, 3,631.38 and 1,189.58 is: 1,783.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,422.58 : 3,631.38 = 1,189.58 : x
  2. Step 2: Convert to fraction form
    2,422.58/3,631.38 = 1,189.58/x
  3. Step 3: Cross multiply
    2,422.58x = 3,631.38 × 1,189.58
  4. Step 4: Simplify right side
    2,422.58x = 4,319,817.02
  5. Step 5: Solve for x
    x = 4,319,817.02/2,422.58
  6. Step 6: Final answer
    x = 1,783.15

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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.