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Finding the Fourth Proportional to 4,879.53, 7,302.27 and 3,991.77

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Solution

The fourth proportional to 4,879.53, 7,302.27 and 3,991.77 is: 5,973.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,879.53 : 7,302.27 = 3,991.77 : x
  2. Step 2: Convert to fraction form
    4,879.53/7,302.27 = 3,991.77/x
  3. Step 3: Cross multiply
    4,879.53x = 7,302.27 × 3,991.77
  4. Step 4: Simplify right side
    4,879.53x = 29,148,982.32
  5. Step 5: Solve for x
    x = 29,148,982.32/4,879.53
  6. Step 6: Final answer
    x = 5,973.73

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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.