Home / 3,989.06-5,511.62-2,867.77

Finding the Fourth Proportional to 3,989.06, 5,511.62 and 2,867.77

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Solution

The fourth proportional to 3,989.06, 5,511.62 and 2,867.77 is: 3,962.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,989.06 : 5,511.62 = 2,867.77 : x
  2. Step 2: Convert to fraction form
    3,989.06/5,511.62 = 2,867.77/x
  3. Step 3: Cross multiply
    3,989.06x = 5,511.62 × 2,867.77
  4. Step 4: Simplify right side
    3,989.06x = 15,806,058.49
  5. Step 5: Solve for x
    x = 15,806,058.49/3,989.06
  6. Step 6: Final answer
    x = 3,962.35

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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.