Home / 3,400.79-4,691.12-2,219.81

Finding the Fourth Proportional to 3,400.79, 4,691.12 and 2,219.81

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Solution

The fourth proportional to 3,400.79, 4,691.12 and 2,219.81 is: 3,062.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,400.79 : 4,691.12 = 2,219.81 : x
  2. Step 2: Convert to fraction form
    3,400.79/4,691.12 = 2,219.81/x
  3. Step 3: Cross multiply
    3,400.79x = 4,691.12 × 2,219.81
  4. Step 4: Simplify right side
    3,400.79x = 10,413,360.53
  5. Step 5: Solve for x
    x = 10,413,360.53/3,400.79
  6. Step 6: Final answer
    x = 3,062.05

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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.