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Finding the Fourth Proportional to 2,998.55, 4,135.20 and 1,879.13

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Solution

The fourth proportional to 2,998.55, 4,135.20 and 1,879.13 is: 2,591.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,998.55 : 4,135.20 = 1,879.13 : x
  2. Step 2: Convert to fraction form
    2,998.55/4,135.20 = 1,879.13/x
  3. Step 3: Cross multiply
    2,998.55x = 4,135.20 × 1,879.13
  4. Step 4: Simplify right side
    2,998.55x = 7,770,578.38
  5. Step 5: Solve for x
    x = 7,770,578.38/2,998.55
  6. Step 6: Final answer
    x = 2,591.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.