Home / 3,420.32-4,719.93-2,162.05

Finding the Fourth Proportional to 3,420.32, 4,719.93 and 2,162.05

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Solution

The fourth proportional to 3,420.32, 4,719.93 and 2,162.05 is: 2,983.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,420.32 : 4,719.93 = 2,162.05 : x
  2. Step 2: Convert to fraction form
    3,420.32/4,719.93 = 2,162.05/x
  3. Step 3: Cross multiply
    3,420.32x = 4,719.93 × 2,162.05
  4. Step 4: Simplify right side
    3,420.32x = 10,204,724.66
  5. Step 5: Solve for x
    x = 10,204,724.66/3,420.32
  6. Step 6: Final answer
    x = 2,983.56

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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.