Home / 2,790.72-4,187.76-1,060.80

Finding the Fourth Proportional to 2,790.72, 4,187.76 and 1,060.80

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Solution

The fourth proportional to 2,790.72, 4,187.76 and 1,060.80 is: 1,591.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,790.72 : 4,187.76 = 1,060.80 : x
  2. Step 2: Convert to fraction form
    2,790.72/4,187.76 = 1,060.80/x
  3. Step 3: Cross multiply
    2,790.72x = 4,187.76 × 1,060.80
  4. Step 4: Simplify right side
    2,790.72x = 4,442,375.81
  5. Step 5: Solve for x
    x = 4,442,375.81/2,790.72
  6. Step 6: Final answer
    x = 1,591.84

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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.