Home / 2,122.10-3,166.51-2,109.94

Finding the Fourth Proportional to 2,122.10, 3,166.51 and 2,109.94

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Solution

The fourth proportional to 2,122.10, 3,166.51 and 2,109.94 is: 3,148.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,122.10 : 3,166.51 = 2,109.94 : x
  2. Step 2: Convert to fraction form
    2,122.10/3,166.51 = 2,109.94/x
  3. Step 3: Cross multiply
    2,122.10x = 3,166.51 × 2,109.94
  4. Step 4: Simplify right side
    2,122.10x = 6,681,135.56
  5. Step 5: Solve for x
    x = 6,681,135.56/2,122.10
  6. Step 6: Final answer
    x = 3,148.36

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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.