Home / 7,991.46-11,028.27-4,454.90

Finding the Fourth Proportional to 7,991.46, 11,028.27 and 4,454.90

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Solution

The fourth proportional to 7,991.46, 11,028.27 and 4,454.90 is: 6,147.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,991.46 : 11,028.27 = 4,454.90 : x
  2. Step 2: Convert to fraction form
    7,991.46/11,028.27 = 4,454.90/x
  3. Step 3: Cross multiply
    7,991.46x = 11,028.27 × 4,454.90
  4. Step 4: Simplify right side
    7,991.46x = 49,129,762.61
  5. Step 5: Solve for x
    x = 49,129,762.61/7,991.46
  6. Step 6: Final answer
    x = 6,147.78

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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.