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Finding the Fourth Proportional to 6,885, 10,318.86 and 3,554.28

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Solution

The fourth proportional to 6,885, 10,318.86 and 3,554.28 is: 5,326.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,885 : 10,318.86 = 3,554.28 : x
  2. Step 2: Convert to fraction form
    6,885/10,318.86 = 3,554.28/x
  3. Step 3: Cross multiply
    6,885x = 10,318.86 × 3,554.28
  4. Step 4: Simplify right side
    6,885x = 36,676,117.72
  5. Step 5: Solve for x
    x = 36,676,117.72/6,885
  6. Step 6: Final answer
    x = 5,326.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.