Home / 7,890.78-11,834.13-2,342.87

Finding the Fourth Proportional to 7,890.78, 11,834.13 and 2,342.87

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Solution

The fourth proportional to 7,890.78, 11,834.13 and 2,342.87 is: 3,513.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,890.78 : 11,834.13 = 2,342.87 : x
  2. Step 2: Convert to fraction form
    7,890.78/11,834.13 = 2,342.87/x
  3. Step 3: Cross multiply
    7,890.78x = 11,834.13 × 2,342.87
  4. Step 4: Simplify right side
    7,890.78x = 27,725,760.20
  5. Step 5: Solve for x
    x = 27,725,760.20/7,890.78
  6. Step 6: Final answer
    x = 3,513.69

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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.