Home / 6,818.20-10,221.30-4,619.80

Finding the Fourth Proportional to 6,818.20, 10,221.30 and 4,619.80

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Solution

The fourth proportional to 6,818.20, 10,221.30 and 4,619.80 is: 6,925.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,818.20 : 10,221.30 = 4,619.80 : x
  2. Step 2: Convert to fraction form
    6,818.20/10,221.30 = 4,619.80/x
  3. Step 3: Cross multiply
    6,818.20x = 10,221.30 × 4,619.80
  4. Step 4: Simplify right side
    6,818.20x = 47,220,361.74
  5. Step 5: Solve for x
    x = 47,220,361.74/6,818.20
  6. Step 6: Final answer
    x = 6,925.63

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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.