Home / 3,921.13-5,411.27-2,219.50

Finding the Fourth Proportional to 3,921.13, 5,411.27 and 2,219.50

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Solution

The fourth proportional to 3,921.13, 5,411.27 and 2,219.50 is: 3,062.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,921.13 : 5,411.27 = 2,219.50 : x
  2. Step 2: Convert to fraction form
    3,921.13/5,411.27 = 2,219.50/x
  3. Step 3: Cross multiply
    3,921.13x = 5,411.27 × 2,219.50
  4. Step 4: Simplify right side
    3,921.13x = 12,010,313.77
  5. Step 5: Solve for x
    x = 12,010,313.77/3,921.13
  6. Step 6: Final answer
    x = 3,062.97

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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.