Home / 7,979.64-11,012.20-4,394.75

Finding the Fourth Proportional to 7,979.64, 11,012.20 and 4,394.75

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Solution

The fourth proportional to 7,979.64, 11,012.20 and 4,394.75 is: 6,064.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,979.64 : 11,012.20 = 4,394.75 : x
  2. Step 2: Convert to fraction form
    7,979.64/11,012.20 = 4,394.75/x
  3. Step 3: Cross multiply
    7,979.64x = 11,012.20 × 4,394.75
  4. Step 4: Simplify right side
    7,979.64x = 48,395,843.23
  5. Step 5: Solve for x
    x = 48,395,843.23/7,979.64
  6. Step 6: Final answer
    x = 6,064.92

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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.