Home / 3,985.66-5,983.11-2,140.39

Finding the Fourth Proportional to 3,985.66, 5,983.11 and 2,140.39

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Solution

The fourth proportional to 3,985.66, 5,983.11 and 2,140.39 is: 3,213.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,985.66 : 5,983.11 = 2,140.39 : x
  2. Step 2: Convert to fraction form
    3,985.66/5,983.11 = 2,140.39/x
  3. Step 3: Cross multiply
    3,985.66x = 5,983.11 × 2,140.39
  4. Step 4: Simplify right side
    3,985.66x = 12,806,188.81
  5. Step 5: Solve for x
    x = 12,806,188.81/3,985.66
  6. Step 6: Final answer
    x = 3,213.07

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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.