Home / 3,989.76-5,982.39-1,910.27

Finding the Fourth Proportional to 3,989.76, 5,982.39 and 1,910.27

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Solution

The fourth proportional to 3,989.76, 5,982.39 and 1,910.27 is: 2,864.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,989.76 : 5,982.39 = 1,910.27 : x
  2. Step 2: Convert to fraction form
    3,989.76/5,982.39 = 1,910.27/x
  3. Step 3: Cross multiply
    3,989.76x = 5,982.39 × 1,910.27
  4. Step 4: Simplify right side
    3,989.76x = 11,427,950.23
  5. Step 5: Solve for x
    x = 11,427,950.23/3,989.76
  6. Step 6: Final answer
    x = 2,864.32

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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.