Home / 5,102.98-7,042.12-2,979.96

Finding the Fourth Proportional to 5,102.98, 7,042.12 and 2,979.96

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Solution

The fourth proportional to 5,102.98, 7,042.12 and 2,979.96 is: 4,112.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,102.98 : 7,042.12 = 2,979.96 : x
  2. Step 2: Convert to fraction form
    5,102.98/7,042.12 = 2,979.96/x
  3. Step 3: Cross multiply
    5,102.98x = 7,042.12 × 2,979.96
  4. Step 4: Simplify right side
    5,102.98x = 20,985,235.92
  5. Step 5: Solve for x
    x = 20,985,235.92/5,102.98
  6. Step 6: Final answer
    x = 4,112.35

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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.