Home / 6,138.92-9,209.64-1,979.48

Finding the Fourth Proportional to 6,138.92, 9,209.64 and 1,979.48

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Solution

The fourth proportional to 6,138.92, 9,209.64 and 1,979.48 is: 2,969.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,138.92 : 9,209.64 = 1,979.48 : x
  2. Step 2: Convert to fraction form
    6,138.92/9,209.64 = 1,979.48/x
  3. Step 3: Cross multiply
    6,138.92x = 9,209.64 × 1,979.48
  4. Step 4: Simplify right side
    6,138.92x = 18,230,298.19
  5. Step 5: Solve for x
    x = 18,230,298.19/6,138.92
  6. Step 6: Final answer
    x = 2,969.63

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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.