Home / 2,122.24-3,181.04-1,392.32

Finding the Fourth Proportional to 2,122.24, 3,181.04 and 1,392.32

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Solution

The fourth proportional to 2,122.24, 3,181.04 and 1,392.32 is: 2,086.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,122.24 : 3,181.04 = 1,392.32 : x
  2. Step 2: Convert to fraction form
    2,122.24/3,181.04 = 1,392.32/x
  3. Step 3: Cross multiply
    2,122.24x = 3,181.04 × 1,392.32
  4. Step 4: Simplify right side
    2,122.24x = 4,429,025.61
  5. Step 5: Solve for x
    x = 4,429,025.61/2,122.24
  6. Step 6: Final answer
    x = 2,086.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.