Home / 7,186.60-9,917.04-4,042.72

Finding the Fourth Proportional to 7,186.60, 9,917.04 and 4,042.72

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Solution

The fourth proportional to 7,186.60, 9,917.04 and 4,042.72 is: 5,578.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,186.60 : 9,917.04 = 4,042.72 : x
  2. Step 2: Convert to fraction form
    7,186.60/9,917.04 = 4,042.72/x
  3. Step 3: Cross multiply
    7,186.60x = 9,917.04 × 4,042.72
  4. Step 4: Simplify right side
    7,186.60x = 40,091,815.95
  5. Step 5: Solve for x
    x = 40,091,815.95/7,186.60
  6. Step 6: Final answer
    x = 5,578.69

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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.