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Finding the Fourth Proportional to 7,215, 9,960.83 and 5,500.04

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Solution

The fourth proportional to 7,215, 9,960.83 and 5,500.04 is: 7,593.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,215 : 9,960.83 = 5,500.04 : x
  2. Step 2: Convert to fraction form
    7,215/9,960.83 = 5,500.04/x
  3. Step 3: Cross multiply
    7,215x = 9,960.83 × 5,500.04
  4. Step 4: Simplify right side
    7,215x = 54,784,927.38
  5. Step 5: Solve for x
    x = 54,784,927.38/7,215
  6. Step 6: Final answer
    x = 7,593.20

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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.