Home / 3,135.92-4,326.32-2,139.60

Finding the Fourth Proportional to 3,135.92, 4,326.32 and 2,139.60

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Solution

The fourth proportional to 3,135.92, 4,326.32 and 2,139.60 is: 2,951.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,135.92 : 4,326.32 = 2,139.60 : x
  2. Step 2: Convert to fraction form
    3,135.92/4,326.32 = 2,139.60/x
  3. Step 3: Cross multiply
    3,135.92x = 4,326.32 × 2,139.60
  4. Step 4: Simplify right side
    3,135.92x = 9,256,594.27
  5. Step 5: Solve for x
    x = 9,256,594.27/3,135.92
  6. Step 6: Final answer
    x = 2,951.80

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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.