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Finding the Fourth Proportional to 7,016.70, 9,682.71 and 3,872.70

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Solution

The fourth proportional to 7,016.70, 9,682.71 and 3,872.70 is: 5,344.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,016.70 : 9,682.71 = 3,872.70 : x
  2. Step 2: Convert to fraction form
    7,016.70/9,682.71 = 3,872.70/x
  3. Step 3: Cross multiply
    7,016.70x = 9,682.71 × 3,872.70
  4. Step 4: Simplify right side
    7,016.70x = 37,498,231.02
  5. Step 5: Solve for x
    x = 37,498,231.02/7,016.70
  6. Step 6: Final answer
    x = 5,344.14

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1.5x scale

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.