Home / 3,881.69-5,356.70-2,113.29

Finding the Fourth Proportional to 3,881.69, 5,356.70 and 2,113.29

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Solution

The fourth proportional to 3,881.69, 5,356.70 and 2,113.29 is: 2,916.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,881.69 : 5,356.70 = 2,113.29 : x
  2. Step 2: Convert to fraction form
    3,881.69/5,356.70 = 2,113.29/x
  3. Step 3: Cross multiply
    3,881.69x = 5,356.70 × 2,113.29
  4. Step 4: Simplify right side
    3,881.69x = 11,320,249.98
  5. Step 5: Solve for x
    x = 11,320,249.98/3,881.69
  6. Step 6: Final answer
    x = 2,916.32

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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.