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Finding the Fourth Proportional to 7,472.11, 11,119.95 and 7,222.96

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Solution

The fourth proportional to 7,472.11, 11,119.95 and 7,222.96 is: 10,749.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,472.11 : 11,119.95 = 7,222.96 : x
  2. Step 2: Convert to fraction form
    7,472.11/11,119.95 = 7,222.96/x
  3. Step 3: Cross multiply
    7,472.11x = 11,119.95 × 7,222.96
  4. Step 4: Simplify right side
    7,472.11x = 80,318,905.40
  5. Step 5: Solve for x
    x = 80,318,905.40/7,472.11
  6. Step 6: Final answer
    x = 10,749.16

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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.