Home / 4,111.20-6,165-1,189.44

Finding the Fourth Proportional to 4,111.20, 6,165 and 1,189.44

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Solution

The fourth proportional to 4,111.20, 6,165 and 1,189.44 is: 1,783.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,111.20 : 6,165 = 1,189.44 : x
  2. Step 2: Convert to fraction form
    4,111.20/6,165 = 1,189.44/x
  3. Step 3: Cross multiply
    4,111.20x = 6,165 × 1,189.44
  4. Step 4: Simplify right side
    4,111.20x = 7,332,897.60
  5. Step 5: Solve for x
    x = 7,332,897.60/4,111.20
  6. Step 6: Final answer
    x = 1,783.64

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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.