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Finding the Fourth Proportional to 5,811.48, 8,717.22 and 4,087.80

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Solution

The fourth proportional to 5,811.48, 8,717.22 and 4,087.80 is: 6,131.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,811.48 : 8,717.22 = 4,087.80 : x
  2. Step 2: Convert to fraction form
    5,811.48/8,717.22 = 4,087.80/x
  3. Step 3: Cross multiply
    5,811.48x = 8,717.22 × 4,087.80
  4. Step 4: Simplify right side
    5,811.48x = 35,634,251.92
  5. Step 5: Solve for x
    x = 35,634,251.92/5,811.48
  6. Step 6: Final answer
    x = 6,131.70

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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.