Home / 3,935.56-5,906.98-1,989.14

Finding the Fourth Proportional to 3,935.56, 5,906.98 and 1,989.14

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Solution

The fourth proportional to 3,935.56, 5,906.98 and 1,989.14 is: 2,985.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,935.56 : 5,906.98 = 1,989.14 : x
  2. Step 2: Convert to fraction form
    3,935.56/5,906.98 = 1,989.14/x
  3. Step 3: Cross multiply
    3,935.56x = 5,906.98 × 1,989.14
  4. Step 4: Simplify right side
    3,935.56x = 11,749,810.20
  5. Step 5: Solve for x
    x = 11,749,810.20/3,935.56
  6. Step 6: Final answer
    x = 2,985.55

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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.