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Finding the Fourth Proportional to 3,925.47, 5,879.97 and 3,187.56

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Solution

The fourth proportional to 3,925.47, 5,879.97 and 3,187.56 is: 4,774.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,925.47 : 5,879.97 = 3,187.56 : x
  2. Step 2: Convert to fraction form
    3,925.47/5,879.97 = 3,187.56/x
  3. Step 3: Cross multiply
    3,925.47x = 5,879.97 × 3,187.56
  4. Step 4: Simplify right side
    3,925.47x = 18,742,757.17
  5. Step 5: Solve for x
    x = 18,742,757.17/3,925.47
  6. Step 6: Final answer
    x = 4,774.65

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1.5x scale

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.