Home / 6,821.74-10,222.99-5,428.88

Finding the Fourth Proportional to 6,821.74, 10,222.99 and 5,428.88

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Solution

The fourth proportional to 6,821.74, 10,222.99 and 5,428.88 is: 8,135.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,821.74 : 10,222.99 = 5,428.88 : x
  2. Step 2: Convert to fraction form
    6,821.74/10,222.99 = 5,428.88/x
  3. Step 3: Cross multiply
    6,821.74x = 10,222.99 × 5,428.88
  4. Step 4: Simplify right side
    6,821.74x = 55,499,385.95
  5. Step 5: Solve for x
    x = 55,499,385.95/6,821.74
  6. Step 6: Final answer
    x = 8,135.66

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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.