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Finding the Fourth Proportional to 6,821.75, 10,232.63 and 2,720.63

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Solution

The fourth proportional to 6,821.75, 10,232.63 and 2,720.63 is: 4,080.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,821.75 : 10,232.63 = 2,720.63 : x
  2. Step 2: Convert to fraction form
    6,821.75/10,232.63 = 2,720.63/x
  3. Step 3: Cross multiply
    6,821.75x = 10,232.63 × 2,720.63
  4. Step 4: Simplify right side
    6,821.75x = 27,839,186.55
  5. Step 5: Solve for x
    x = 27,839,186.55/6,821.75
  6. Step 6: Final answer
    x = 4,080.95

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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.