Home / 3,989.21-5,981.81-2,323.88

Finding the Fourth Proportional to 3,989.21, 5,981.81 and 2,323.88

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Solution

The fourth proportional to 3,989.21, 5,981.81 and 2,323.88 is: 3,484.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,989.21 : 5,981.81 = 2,323.88 : x
  2. Step 2: Convert to fraction form
    3,989.21/5,981.81 = 2,323.88/x
  3. Step 3: Cross multiply
    3,989.21x = 5,981.81 × 2,323.88
  4. Step 4: Simplify right side
    3,989.21x = 13,901,023.17
  5. Step 5: Solve for x
    x = 13,901,023.17/3,989.21
  6. Step 6: Final answer
    x = 3,484.66

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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.