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Finding the Fourth Proportional to 6,979.15, 10,474.22 and 6,159.07

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Solution

The fourth proportional to 6,979.15, 10,474.22 and 6,159.07 is: 9,243.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,979.15 : 10,474.22 = 6,159.07 : x
  2. Step 2: Convert to fraction form
    6,979.15/10,474.22 = 6,159.07/x
  3. Step 3: Cross multiply
    6,979.15x = 10,474.22 × 6,159.07
  4. Step 4: Simplify right side
    6,979.15x = 64,511,454.18
  5. Step 5: Solve for x
    x = 64,511,454.18/6,979.15
  6. Step 6: Final answer
    x = 9,243.45

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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.