Home / 5,518.67-8,231.40-4,687.61

Finding the Fourth Proportional to 5,518.67, 8,231.40 and 4,687.61

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Solution

The fourth proportional to 5,518.67, 8,231.40 and 4,687.61 is: 6,991.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,518.67 : 8,231.40 = 4,687.61 : x
  2. Step 2: Convert to fraction form
    5,518.67/8,231.40 = 4,687.61/x
  3. Step 3: Cross multiply
    5,518.67x = 8,231.40 × 4,687.61
  4. Step 4: Simplify right side
    5,518.67x = 38,585,551.80
  5. Step 5: Solve for x
    x = 38,585,551.80/5,518.67
  6. Step 6: Final answer
    x = 6,991.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.