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Finding the Fourth Proportional to 7,081.74, 10,621.17 and 6,730.47

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Solution

The fourth proportional to 7,081.74, 10,621.17 and 6,730.47 is: 10,094.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,081.74 : 10,621.17 = 6,730.47 : x
  2. Step 2: Convert to fraction form
    7,081.74/10,621.17 = 6,730.47/x
  3. Step 3: Cross multiply
    7,081.74x = 10,621.17 × 6,730.47
  4. Step 4: Simplify right side
    7,081.74x = 71,485,466.05
  5. Step 5: Solve for x
    x = 71,485,466.05/7,081.74
  6. Step 6: Final answer
    x = 10,094.34

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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.