Home / 6,979.14-9,631.44-3,994.74

Finding the Fourth Proportional to 6,979.14, 9,631.44 and 3,994.74

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Solution

The fourth proportional to 6,979.14, 9,631.44 and 3,994.74 is: 5,512.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,979.14 : 9,631.44 = 3,994.74 : x
  2. Step 2: Convert to fraction form
    6,979.14/9,631.44 = 3,994.74/x
  3. Step 3: Cross multiply
    6,979.14x = 9,631.44 × 3,994.74
  4. Step 4: Simplify right side
    6,979.14x = 38,475,098.63
  5. Step 5: Solve for x
    x = 38,475,098.63/6,979.14
  6. Step 6: Final answer
    x = 5,512.87

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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.