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Finding the Fourth Proportional to 1,688.69, 2,537.82 and 995.68

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Solution

The fourth proportional to 1,688.69, 2,537.82 and 995.68 is: 1,496.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,688.69 : 2,537.82 = 995.68 : x
  2. Step 2: Convert to fraction form
    1,688.69/2,537.82 = 995.68/x
  3. Step 3: Cross multiply
    1,688.69x = 2,537.82 × 995.68
  4. Step 4: Simplify right side
    1,688.69x = 2,526,856.62
  5. Step 5: Solve for x
    x = 2,526,856.62/1,688.69
  6. Step 6: Final answer
    x = 1,496.34

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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.