Home / 8,188.20-11,290.79-5,531.00

Finding the Fourth Proportional to 8,188.20, 11,290.79 and 5,531.00

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Solution

The fourth proportional to 8,188.20, 11,290.79 and 5,531.00 is: 7,626.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,188.20 : 11,290.79 = 5,531.00 : x
  2. Step 2: Convert to fraction form
    8,188.20/11,290.79 = 5,531.00/x
  3. Step 3: Cross multiply
    8,188.20x = 11,290.79 × 5,531.00
  4. Step 4: Simplify right side
    8,188.20x = 62,449,316.86
  5. Step 5: Solve for x
    x = 62,449,316.86/8,188.20
  6. Step 6: Final answer
    x = 7,626.75

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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.