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Finding the Fourth Proportional to 2,458.69, 3,688 and 997.49

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Solution

The fourth proportional to 2,458.69, 3,688 and 997.49 is: 1,496.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,458.69 : 3,688 = 997.49 : x
  2. Step 2: Convert to fraction form
    2,458.69/3,688 = 997.49/x
  3. Step 3: Cross multiply
    2,458.69x = 3,688 × 997.49
  4. Step 4: Simplify right side
    2,458.69x = 3,678,743.12
  5. Step 5: Solve for x
    x = 3,678,743.12/2,458.69
  6. Step 6: Final answer
    x = 1,496.22

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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.