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Finding the Fourth Proportional to 6,857.12, 9,462.80 and 3,713.31

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Solution

The fourth proportional to 6,857.12, 9,462.80 and 3,713.31 is: 5,124.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,857.12 : 9,462.80 = 3,713.31 : x
  2. Step 2: Convert to fraction form
    6,857.12/9,462.80 = 3,713.31/x
  3. Step 3: Cross multiply
    6,857.12x = 9,462.80 × 3,713.31
  4. Step 4: Simplify right side
    6,857.12x = 35,138,291.30
  5. Step 5: Solve for x
    x = 35,138,291.30/6,857.12
  6. Step 6: Final answer
    x = 5,124.35

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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.