Home / 6,979.47-9,631.11-3,994.62

Finding the Fourth Proportional to 6,979.47, 9,631.11 and 3,994.62

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Solution

The fourth proportional to 6,979.47, 9,631.11 and 3,994.62 is: 5,512.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,979.47 : 9,631.11 = 3,994.62 : x
  2. Step 2: Convert to fraction form
    6,979.47/9,631.11 = 3,994.62/x
  3. Step 3: Cross multiply
    6,979.47x = 9,631.11 × 3,994.62
  4. Step 4: Simplify right side
    6,979.47x = 38,472,624.63
  5. Step 5: Solve for x
    x = 38,472,624.63/6,979.47
  6. Step 6: Final answer
    x = 5,512.26

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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.