Home / 9,257.93-12,780.11-5,905.21

Finding the Fourth Proportional to 9,257.93, 12,780.11 and 5,905.21

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Solution

The fourth proportional to 9,257.93, 12,780.11 and 5,905.21 is: 8,151.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,257.93 : 12,780.11 = 5,905.21 : x
  2. Step 2: Convert to fraction form
    9,257.93/12,780.11 = 5,905.21/x
  3. Step 3: Cross multiply
    9,257.93x = 12,780.11 × 5,905.21
  4. Step 4: Simplify right side
    9,257.93x = 75,469,233.37
  5. Step 5: Solve for x
    x = 75,469,233.37/9,257.93
  6. Step 6: Final answer
    x = 8,151.85

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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.