Home / 6,484.20-9,722.70-2,785.80

Finding the Fourth Proportional to 6,484.20, 9,722.70 and 2,785.80

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Solution

The fourth proportional to 6,484.20, 9,722.70 and 2,785.80 is: 4,177.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,484.20 : 9,722.70 = 2,785.80 : x
  2. Step 2: Convert to fraction form
    6,484.20/9,722.70 = 2,785.80/x
  3. Step 3: Cross multiply
    6,484.20x = 9,722.70 × 2,785.80
  4. Step 4: Simplify right side
    6,484.20x = 27,085,497.66
  5. Step 5: Solve for x
    x = 27,085,497.66/6,484.20
  6. Step 6: Final answer
    x = 4,177.15

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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.