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Finding the Fourth Proportional to 7,211.70, 10,753.89 and 6,954.72

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Solution

The fourth proportional to 7,211.70, 10,753.89 and 6,954.72 is: 10,370.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,211.70 : 10,753.89 = 6,954.72 : x
  2. Step 2: Convert to fraction form
    7,211.70/10,753.89 = 6,954.72/x
  3. Step 3: Cross multiply
    7,211.70x = 10,753.89 × 6,954.72
  4. Step 4: Simplify right side
    7,211.70x = 74,790,293.86
  5. Step 5: Solve for x
    x = 74,790,293.86/7,211.70
  6. Step 6: Final answer
    x = 10,370.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.