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Finding the Fourth Proportional to 2,416.69, 3,625 and 685.32

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Solution

The fourth proportional to 2,416.69, 3,625 and 685.32 is: 1,027.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,416.69 : 3,625 = 685.32 : x
  2. Step 2: Convert to fraction form
    2,416.69/3,625 = 685.32/x
  3. Step 3: Cross multiply
    2,416.69x = 3,625 × 685.32
  4. Step 4: Simplify right side
    2,416.69x = 2,484,285
  5. Step 5: Solve for x
    x = 2,484,285/2,416.69
  6. Step 6: Final answer
    x = 1,027.97

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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.