Home / 2,122.31-3,169.34-2,099.43

Finding the Fourth Proportional to 2,122.31, 3,169.34 and 2,099.43

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Solution

The fourth proportional to 2,122.31, 3,169.34 and 2,099.43 is: 3,135.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,122.31 : 3,169.34 = 2,099.43 : x
  2. Step 2: Convert to fraction form
    2,122.31/3,169.34 = 2,099.43/x
  3. Step 3: Cross multiply
    2,122.31x = 3,169.34 × 2,099.43
  4. Step 4: Simplify right side
    2,122.31x = 6,653,807.48
  5. Step 5: Solve for x
    x = 6,653,807.48/2,122.31
  6. Step 6: Final answer
    x = 3,135.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.