Home / 2,123.10-3,168-2,110.94

Finding the Fourth Proportional to 2,123.10, 3,168 and 2,110.94

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Solution

The fourth proportional to 2,123.10, 3,168 and 2,110.94 is: 3,149.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,123.10 : 3,168 = 2,110.94 : x
  2. Step 2: Convert to fraction form
    2,123.10/3,168 = 2,110.94/x
  3. Step 3: Cross multiply
    2,123.10x = 3,168 × 2,110.94
  4. Step 4: Simplify right side
    2,123.10x = 6,687,457.92
  5. Step 5: Solve for x
    x = 6,687,457.92/2,123.10
  6. Step 6: Final answer
    x = 3,149.86

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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.