Home / 2,123.50-2,930.70-1,192

Finding the Fourth Proportional to 2,123.50, 2,930.70 and 1,192

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Solution

The fourth proportional to 2,123.50, 2,930.70 and 1,192 is: 1,645.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,123.50 : 2,930.70 = 1,192 : x
  2. Step 2: Convert to fraction form
    2,123.50/2,930.70 = 1,192/x
  3. Step 3: Cross multiply
    2,123.50x = 2,930.70 × 1,192
  4. Step 4: Simplify right side
    2,123.50x = 3,493,394.40
  5. Step 5: Solve for x
    x = 3,493,394.40/2,123.50
  6. Step 6: Final answer
    x = 1,645.11

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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.