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Finding the Fourth Proportional to 2,636, 3,636.56 and 2,415.68

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Solution

The fourth proportional to 2,636, 3,636.56 and 2,415.68 is: 3,332.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,636 : 3,636.56 = 2,415.68 : x
  2. Step 2: Convert to fraction form
    2,636/3,636.56 = 2,415.68/x
  3. Step 3: Cross multiply
    2,636x = 3,636.56 × 2,415.68
  4. Step 4: Simplify right side
    2,636x = 8,784,765.26
  5. Step 5: Solve for x
    x = 8,784,765.26/2,636
  6. Step 6: Final answer
    x = 3,332.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.