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Finding the Fourth Proportional to 6,751.98, 9,316.24 and 3,917.72

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Solution

The fourth proportional to 6,751.98, 9,316.24 and 3,917.72 is: 5,405.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,751.98 : 9,316.24 = 3,917.72 : x
  2. Step 2: Convert to fraction form
    6,751.98/9,316.24 = 3,917.72/x
  3. Step 3: Cross multiply
    6,751.98x = 9,316.24 × 3,917.72
  4. Step 4: Simplify right side
    6,751.98x = 36,498,373.19
  5. Step 5: Solve for x
    x = 36,498,373.19/6,751.98
  6. Step 6: Final answer
    x = 5,405.58

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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.