Home / 3,759.50-5,188.29-2,166.39

Finding the Fourth Proportional to 3,759.50, 5,188.29 and 2,166.39

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Solution

The fourth proportional to 3,759.50, 5,188.29 and 2,166.39 is: 2,989.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,759.50 : 5,188.29 = 2,166.39 : x
  2. Step 2: Convert to fraction form
    3,759.50/5,188.29 = 2,166.39/x
  3. Step 3: Cross multiply
    3,759.50x = 5,188.29 × 2,166.39
  4. Step 4: Simplify right side
    3,759.50x = 11,239,869.61
  5. Step 5: Solve for x
    x = 11,239,869.61/3,759.50
  6. Step 6: Final answer
    x = 2,989.72

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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.