Home / 7,890.92-11,828.40-5,119.34

Finding the Fourth Proportional to 7,890.92, 11,828.40 and 5,119.34

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Solution

The fourth proportional to 7,890.92, 11,828.40 and 5,119.34 is: 7,673.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,890.92 : 11,828.40 = 5,119.34 : x
  2. Step 2: Convert to fraction form
    7,890.92/11,828.40 = 5,119.34/x
  3. Step 3: Cross multiply
    7,890.92x = 11,828.40 × 5,119.34
  4. Step 4: Simplify right side
    7,890.92x = 60,553,601.26
  5. Step 5: Solve for x
    x = 60,553,601.26/7,890.92
  6. Step 6: Final answer
    x = 7,673.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.