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Finding the Fourth Proportional to 6,864.66, 9,473.31 and 3,720.87

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Solution

The fourth proportional to 6,864.66, 9,473.31 and 3,720.87 is: 5,134.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,864.66 : 9,473.31 = 3,720.87 : x
  2. Step 2: Convert to fraction form
    6,864.66/9,473.31 = 3,720.87/x
  3. Step 3: Cross multiply
    6,864.66x = 9,473.31 × 3,720.87
  4. Step 4: Simplify right side
    6,864.66x = 35,248,954.98
  5. Step 5: Solve for x
    x = 35,248,954.98/6,864.66
  6. Step 6: Final answer
    x = 5,134.84

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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.