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Finding the Fourth Proportional to 3,773.79, 5,688.63 and 3,128.63

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Solution

The fourth proportional to 3,773.79, 5,688.63 and 3,128.63 is: 4,716.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,773.79 : 5,688.63 = 3,128.63 : x
  2. Step 2: Convert to fraction form
    3,773.79/5,688.63 = 3,128.63/x
  3. Step 3: Cross multiply
    3,773.79x = 5,688.63 × 3,128.63
  4. Step 4: Simplify right side
    3,773.79x = 17,797,590.03
  5. Step 5: Solve for x
    x = 17,797,590.03/3,773.79
  6. Step 6: Final answer
    x = 4,716.11

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.