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Finding the Fourth Proportional to 7,081.80, 10,621.28 and 6,730.53

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Solution

The fourth proportional to 7,081.80, 10,621.28 and 6,730.53 is: 10,094.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,081.80 : 10,621.28 = 6,730.53 : x
  2. Step 2: Convert to fraction form
    7,081.80/10,621.28 = 6,730.53/x
  3. Step 3: Cross multiply
    7,081.80x = 10,621.28 × 6,730.53
  4. Step 4: Simplify right side
    7,081.80x = 71,486,843.68
  5. Step 5: Solve for x
    x = 71,486,843.68/7,081.80
  6. Step 6: Final answer
    x = 10,094.45

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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.