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Finding the Fourth Proportional to 5,790.77, 7,994.01 and 3,879.87

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Solution

The fourth proportional to 5,790.77, 7,994.01 and 3,879.87 is: 5,356.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,790.77 : 7,994.01 = 3,879.87 : x
  2. Step 2: Convert to fraction form
    5,790.77/7,994.01 = 3,879.87/x
  3. Step 3: Cross multiply
    5,790.77x = 7,994.01 × 3,879.87
  4. Step 4: Simplify right side
    5,790.77x = 31,015,749.56
  5. Step 5: Solve for x
    x = 31,015,749.56/5,790.77
  6. Step 6: Final answer
    x = 5,356.07

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1.5x scale

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.