Home / 8,416.20-11,604.78-6,899

Finding the Fourth Proportional to 8,416.20, 11,604.78 and 6,899

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Solution

The fourth proportional to 8,416.20, 11,604.78 and 6,899 is: 9,512.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,416.20 : 11,604.78 = 6,899 : x
  2. Step 2: Convert to fraction form
    8,416.20/11,604.78 = 6,899/x
  3. Step 3: Cross multiply
    8,416.20x = 11,604.78 × 6,899
  4. Step 4: Simplify right side
    8,416.20x = 80,061,377.22
  5. Step 5: Solve for x
    x = 80,061,377.22/8,416.20
  6. Step 6: Final answer
    x = 9,512.77

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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.