Home / 9,183.78-12,641.40-8,002.80

Finding the Fourth Proportional to 9,183.78, 12,641.40 and 8,002.80

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Solution

The fourth proportional to 9,183.78, 12,641.40 and 8,002.80 is: 11,015.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,183.78 : 12,641.40 = 8,002.80 : x
  2. Step 2: Convert to fraction form
    9,183.78/12,641.40 = 8,002.80/x
  3. Step 3: Cross multiply
    9,183.78x = 12,641.40 × 8,002.80
  4. Step 4: Simplify right side
    9,183.78x = 101,166,595.92
  5. Step 5: Solve for x
    x = 101,166,595.92/9,183.78
  6. Step 6: Final answer
    x = 11,015.79

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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.