Home / 7,979.37-11,969.05-2,135.83

Finding the Fourth Proportional to 7,979.37, 11,969.05 and 2,135.83

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Solution

The fourth proportional to 7,979.37, 11,969.05 and 2,135.83 is: 3,203.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,979.37 : 11,969.05 = 2,135.83 : x
  2. Step 2: Convert to fraction form
    7,979.37/11,969.05 = 2,135.83/x
  3. Step 3: Cross multiply
    7,979.37x = 11,969.05 × 2,135.83
  4. Step 4: Simplify right side
    7,979.37x = 25,563,856.06
  5. Step 5: Solve for x
    x = 25,563,856.06/7,979.37
  6. Step 6: Final answer
    x = 3,203.74

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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.