Home / 2,123.75-2,930.79-1,295.75

Finding the Fourth Proportional to 2,123.75, 2,930.79 and 1,295.75

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Solution

The fourth proportional to 2,123.75, 2,930.79 and 1,295.75 is: 1,788.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,123.75 : 2,930.79 = 1,295.75 : x
  2. Step 2: Convert to fraction form
    2,123.75/2,930.79 = 1,295.75/x
  3. Step 3: Cross multiply
    2,123.75x = 2,930.79 × 1,295.75
  4. Step 4: Simplify right side
    2,123.75x = 3,797,571.14
  5. Step 5: Solve for x
    x = 3,797,571.14/2,123.75
  6. Step 6: Final answer
    x = 1,788.14

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1.5x scale

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.