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Finding the Fourth Proportional to 7,751.97, 10,697.28 and 4,215.18

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Solution

The fourth proportional to 7,751.97, 10,697.28 and 4,215.18 is: 5,816.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,751.97 : 10,697.28 = 4,215.18 : x
  2. Step 2: Convert to fraction form
    7,751.97/10,697.28 = 4,215.18/x
  3. Step 3: Cross multiply
    7,751.97x = 10,697.28 × 4,215.18
  4. Step 4: Simplify right side
    7,751.97x = 45,090,960.71
  5. Step 5: Solve for x
    x = 45,090,960.71/7,751.97
  6. Step 6: Final answer
    x = 5,816.71

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