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Finding the Fourth Proportional to 7,991.03, 11,027.61 and 4,454.21

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Solution

The fourth proportional to 7,991.03, 11,027.61 and 4,454.21 is: 6,146.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,991.03 : 11,027.61 = 4,454.21 : x
  2. Step 2: Convert to fraction form
    7,991.03/11,027.61 = 4,454.21/x
  3. Step 3: Cross multiply
    7,991.03x = 11,027.61 × 4,454.21
  4. Step 4: Simplify right side
    7,991.03x = 49,119,235.60
  5. Step 5: Solve for x
    x = 49,119,235.60/7,991.03
  6. Step 6: Final answer
    x = 6,146.80

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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.