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Finding the Fourth Proportional to 6,691.61, 9,231.36 and 4,334.51

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Solution

The fourth proportional to 6,691.61, 9,231.36 and 4,334.51 is: 5,979.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,691.61 : 9,231.36 = 4,334.51 : x
  2. Step 2: Convert to fraction form
    6,691.61/9,231.36 = 4,334.51/x
  3. Step 3: Cross multiply
    6,691.61x = 9,231.36 × 4,334.51
  4. Step 4: Simplify right side
    6,691.61x = 40,013,422.23
  5. Step 5: Solve for x
    x = 40,013,422.23/6,691.61
  6. Step 6: Final answer
    x = 5,979.64

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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.