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Finding the Fourth Proportional to 2,404.49, 3,606.80 and 761.13

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Solution

The fourth proportional to 2,404.49, 3,606.80 and 761.13 is: 1,141.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,404.49 : 3,606.80 = 761.13 : x
  2. Step 2: Convert to fraction form
    2,404.49/3,606.80 = 761.13/x
  3. Step 3: Cross multiply
    2,404.49x = 3,606.80 × 761.13
  4. Step 4: Simplify right side
    2,404.49x = 2,745,239.88
  5. Step 5: Solve for x
    x = 2,745,239.88/2,404.49
  6. Step 6: Final answer
    x = 1,141.72

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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.