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Finding the Fourth Proportional to 6,530.72, 9,792.04 and 2,147

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Solution

The fourth proportional to 6,530.72, 9,792.04 and 2,147 is: 3,219.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,530.72 : 9,792.04 = 2,147 : x
  2. Step 2: Convert to fraction form
    6,530.72/9,792.04 = 2,147/x
  3. Step 3: Cross multiply
    6,530.72x = 9,792.04 × 2,147
  4. Step 4: Simplify right side
    6,530.72x = 21,023,509.88
  5. Step 5: Solve for x
    x = 21,023,509.88/6,530.72
  6. Step 6: Final answer
    x = 3,219.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.