Home / 8,416.36-12,627.78-3,221.02

Finding the Fourth Proportional to 8,416.36, 12,627.78 and 3,221.02

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Solution

The fourth proportional to 8,416.36, 12,627.78 and 3,221.02 is: 4,832.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,416.36 : 12,627.78 = 3,221.02 : x
  2. Step 2: Convert to fraction form
    8,416.36/12,627.78 = 3,221.02/x
  3. Step 3: Cross multiply
    8,416.36x = 12,627.78 × 3,221.02
  4. Step 4: Simplify right side
    8,416.36x = 40,674,331.94
  5. Step 5: Solve for x
    x = 40,674,331.94/8,416.36
  6. Step 6: Final answer
    x = 4,832.77

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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.