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Finding the Fourth Proportional to 4,994.30, 7,479.77 and 3,947.28

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Solution

The fourth proportional to 4,994.30, 7,479.77 and 3,947.28 is: 5,911.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,994.30 : 7,479.77 = 3,947.28 : x
  2. Step 2: Convert to fraction form
    4,994.30/7,479.77 = 3,947.28/x
  3. Step 3: Cross multiply
    4,994.30x = 7,479.77 × 3,947.28
  4. Step 4: Simplify right side
    4,994.30x = 29,524,709.13
  5. Step 5: Solve for x
    x = 29,524,709.13/4,994.30
  6. Step 6: Final answer
    x = 5,911.68

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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.