Home / 3,976.83-5,492.11-2,980.53

Finding the Fourth Proportional to 3,976.83, 5,492.11 and 2,980.53

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Solution

The fourth proportional to 3,976.83, 5,492.11 and 2,980.53 is: 4,116.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,976.83 : 5,492.11 = 2,980.53 : x
  2. Step 2: Convert to fraction form
    3,976.83/5,492.11 = 2,980.53/x
  3. Step 3: Cross multiply
    3,976.83x = 5,492.11 × 2,980.53
  4. Step 4: Simplify right side
    3,976.83x = 16,369,419.80
  5. Step 5: Solve for x
    x = 16,369,419.80/3,976.83
  6. Step 6: Final answer
    x = 4,116.20

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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.