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Finding the Fourth Proportional to 6,730.56, 9,287.28 and 4,078.08

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Solution

The fourth proportional to 6,730.56, 9,287.28 and 4,078.08 is: 5,627.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,730.56 : 9,287.28 = 4,078.08 : x
  2. Step 2: Convert to fraction form
    6,730.56/9,287.28 = 4,078.08/x
  3. Step 3: Cross multiply
    6,730.56x = 9,287.28 × 4,078.08
  4. Step 4: Simplify right side
    6,730.56x = 37,874,270.82
  5. Step 5: Solve for x
    x = 37,874,270.82/6,730.56
  6. Step 6: Final answer
    x = 5,627.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.