Home / 7,890.72-11,836.71-2,625.54

Finding the Fourth Proportional to 7,890.72, 11,836.71 and 2,625.54

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Solution

The fourth proportional to 7,890.72, 11,836.71 and 2,625.54 is: 3,938.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,890.72 : 11,836.71 = 2,625.54 : x
  2. Step 2: Convert to fraction form
    7,890.72/11,836.71 = 2,625.54/x
  3. Step 3: Cross multiply
    7,890.72x = 11,836.71 × 2,625.54
  4. Step 4: Simplify right side
    7,890.72x = 31,077,755.57
  5. Step 5: Solve for x
    x = 31,077,755.57/7,890.72
  6. Step 6: Final answer
    x = 3,938.52

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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.