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Finding the Fourth Proportional to 2,996.61, 4,137.87 and 1,879.42

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Solution

The fourth proportional to 2,996.61, 4,137.87 and 1,879.42 is: 2,595.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,996.61 : 4,137.87 = 1,879.42 : x
  2. Step 2: Convert to fraction form
    2,996.61/4,137.87 = 1,879.42/x
  3. Step 3: Cross multiply
    2,996.61x = 4,137.87 × 1,879.42
  4. Step 4: Simplify right side
    2,996.61x = 7,776,795.64
  5. Step 5: Solve for x
    x = 7,776,795.64/2,996.61
  6. Step 6: Final answer
    x = 2,595.20

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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.