Home / 9,278.48-13,905.60-8,105.66

Finding the Fourth Proportional to 9,278.48, 13,905.60 and 8,105.66

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Solution

The fourth proportional to 9,278.48, 13,905.60 and 8,105.66 is: 12,147.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,278.48 : 13,905.60 = 8,105.66 : x
  2. Step 2: Convert to fraction form
    9,278.48/13,905.60 = 8,105.66/x
  3. Step 3: Cross multiply
    9,278.48x = 13,905.60 × 8,105.66
  4. Step 4: Simplify right side
    9,278.48x = 112,714,065.70
  5. Step 5: Solve for x
    x = 112,714,065.70/9,278.48
  6. Step 6: Final answer
    x = 12,147.90

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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.