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Finding the Fourth Proportional to 7,310.16, 10,962.21 and 3,147.99

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Solution

The fourth proportional to 7,310.16, 10,962.21 and 3,147.99 is: 4,720.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,310.16 : 10,962.21 = 3,147.99 : x
  2. Step 2: Convert to fraction form
    7,310.16/10,962.21 = 3,147.99/x
  3. Step 3: Cross multiply
    7,310.16x = 10,962.21 × 3,147.99
  4. Step 4: Simplify right side
    7,310.16x = 34,508,927.46
  5. Step 5: Solve for x
    x = 34,508,927.46/7,310.16
  6. Step 6: Final answer
    x = 4,720.68

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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.