Home / 8,847.78-12,211.38-5,311.68

Finding the Fourth Proportional to 8,847.78, 12,211.38 and 5,311.68

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Solution

The fourth proportional to 8,847.78, 12,211.38 and 5,311.68 is: 7,330.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,847.78 : 12,211.38 = 5,311.68 : x
  2. Step 2: Convert to fraction form
    8,847.78/12,211.38 = 5,311.68/x
  3. Step 3: Cross multiply
    8,847.78x = 12,211.38 × 5,311.68
  4. Step 4: Simplify right side
    8,847.78x = 64,862,942.92
  5. Step 5: Solve for x
    x = 64,862,942.92/8,847.78
  6. Step 6: Final answer
    x = 7,330.99

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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.