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Finding the Fourth Proportional to 7,991.08, 11,027.16 and 4,454.20

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Solution

The fourth proportional to 7,991.08, 11,027.16 and 4,454.20 is: 6,146.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,991.08 : 11,027.16 = 4,454.20 : x
  2. Step 2: Convert to fraction form
    7,991.08/11,027.16 = 4,454.20/x
  3. Step 3: Cross multiply
    7,991.08x = 11,027.16 × 4,454.20
  4. Step 4: Simplify right side
    7,991.08x = 49,117,176.07
  5. Step 5: Solve for x
    x = 49,117,176.07/7,991.08
  6. Step 6: Final answer
    x = 6,146.50

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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.