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Finding the Fourth Proportional to 7,072.44, 10,607.29 and 6,721.20

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Solution

The fourth proportional to 7,072.44, 10,607.29 and 6,721.20 is: 10,080.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,072.44 : 10,607.29 = 6,721.20 : x
  2. Step 2: Convert to fraction form
    7,072.44/10,607.29 = 6,721.20/x
  3. Step 3: Cross multiply
    7,072.44x = 10,607.29 × 6,721.20
  4. Step 4: Simplify right side
    7,072.44x = 71,293,700.75
  5. Step 5: Solve for x
    x = 71,293,700.75/7,072.44
  6. Step 6: Final answer
    x = 10,080.50

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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.