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Finding the Fourth Proportional to 7,908.12, 10,908 and 4,761

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Solution

The fourth proportional to 7,908.12, 10,908 and 4,761 is: 6,567.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,908.12 : 10,908 = 4,761 : x
  2. Step 2: Convert to fraction form
    7,908.12/10,908 = 4,761/x
  3. Step 3: Cross multiply
    7,908.12x = 10,908 × 4,761
  4. Step 4: Simplify right side
    7,908.12x = 51,932,988
  5. Step 5: Solve for x
    x = 51,932,988/7,908.12
  6. Step 6: Final answer
    x = 6,567.05

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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.