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Finding the Fourth Proportional to 7,699.28, 11,549.98 and 2,768

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Solution

The fourth proportional to 7,699.28, 11,549.98 and 2,768 is: 4,152.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,699.28 : 11,549.98 = 2,768 : x
  2. Step 2: Convert to fraction form
    7,699.28/11,549.98 = 2,768/x
  3. Step 3: Cross multiply
    7,699.28x = 11,549.98 × 2,768
  4. Step 4: Simplify right side
    7,699.28x = 31,970,344.64
  5. Step 5: Solve for x
    x = 31,970,344.64/7,699.28
  6. Step 6: Final answer
    x = 4,152.38

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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.