Home / 8,391.27-11,580.51-5,553.75

Finding the Fourth Proportional to 8,391.27, 11,580.51 and 5,553.75

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Solution

The fourth proportional to 8,391.27, 11,580.51 and 5,553.75 is: 7,664.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,391.27 : 11,580.51 = 5,553.75 : x
  2. Step 2: Convert to fraction form
    8,391.27/11,580.51 = 5,553.75/x
  3. Step 3: Cross multiply
    8,391.27x = 11,580.51 × 5,553.75
  4. Step 4: Simplify right side
    8,391.27x = 64,315,257.41
  5. Step 5: Solve for x
    x = 64,315,257.41/8,391.27
  6. Step 6: Final answer
    x = 7,664.54

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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.