Home / 3,881.45-5,356.28-2,113.02

Finding the Fourth Proportional to 3,881.45, 5,356.28 and 2,113.02

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Solution

The fourth proportional to 3,881.45, 5,356.28 and 2,113.02 is: 2,915.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,881.45 : 5,356.28 = 2,113.02 : x
  2. Step 2: Convert to fraction form
    3,881.45/5,356.28 = 2,113.02/x
  3. Step 3: Cross multiply
    3,881.45x = 5,356.28 × 2,113.02
  4. Step 4: Simplify right side
    3,881.45x = 11,317,932.05
  5. Step 5: Solve for x
    x = 11,317,932.05/3,881.45
  6. Step 6: Final answer
    x = 2,915.90

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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.