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Finding the Fourth Proportional to 3,155.79, 4,732.34 and 1,400.79

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Solution

The fourth proportional to 3,155.79, 4,732.34 and 1,400.79 is: 2,100.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,155.79 : 4,732.34 = 1,400.79 : x
  2. Step 2: Convert to fraction form
    3,155.79/4,732.34 = 1,400.79/x
  3. Step 3: Cross multiply
    3,155.79x = 4,732.34 × 1,400.79
  4. Step 4: Simplify right side
    3,155.79x = 6,629,007.54
  5. Step 5: Solve for x
    x = 6,629,007.54/3,155.79
  6. Step 6: Final answer
    x = 2,100.59

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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.