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Finding the Fourth Proportional to 2,699.28, 4,048.62 and 725.10

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Solution

The fourth proportional to 2,699.28, 4,048.62 and 725.10 is: 1,087.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,699.28 : 4,048.62 = 725.10 : x
  2. Step 2: Convert to fraction form
    2,699.28/4,048.62 = 725.10/x
  3. Step 3: Cross multiply
    2,699.28x = 4,048.62 × 725.10
  4. Step 4: Simplify right side
    2,699.28x = 2,935,654.36
  5. Step 5: Solve for x
    x = 2,935,654.36/2,699.28
  6. Step 6: Final answer
    x = 1,087.57

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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.