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Finding the Fourth Proportional to 7,222.65, 9,960.21 and 4,828.56

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Solution

The fourth proportional to 7,222.65, 9,960.21 and 4,828.56 is: 6,658.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,222.65 : 9,960.21 = 4,828.56 : x
  2. Step 2: Convert to fraction form
    7,222.65/9,960.21 = 4,828.56/x
  3. Step 3: Cross multiply
    7,222.65x = 9,960.21 × 4,828.56
  4. Step 4: Simplify right side
    7,222.65x = 48,093,471.60
  5. Step 5: Solve for x
    x = 48,093,471.60/7,222.65
  6. Step 6: Final answer
    x = 6,658.70

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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.