Home / 2,769.09-4,153.11-1,287.90

Finding the Fourth Proportional to 2,769.09, 4,153.11 and 1,287.90

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Solution

The fourth proportional to 2,769.09, 4,153.11 and 1,287.90 is: 1,931.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,769.09 : 4,153.11 = 1,287.90 : x
  2. Step 2: Convert to fraction form
    2,769.09/4,153.11 = 1,287.90/x
  3. Step 3: Cross multiply
    2,769.09x = 4,153.11 × 1,287.90
  4. Step 4: Simplify right side
    2,769.09x = 5,348,790.37
  5. Step 5: Solve for x
    x = 5,348,790.37/2,769.09
  6. Step 6: Final answer
    x = 1,931.61

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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.