Home / 3,078.90-4,250.16-2,137.77

Finding the Fourth Proportional to 3,078.90, 4,250.16 and 2,137.77

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Solution

The fourth proportional to 3,078.90, 4,250.16 and 2,137.77 is: 2,951.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,078.90 : 4,250.16 = 2,137.77 : x
  2. Step 2: Convert to fraction form
    3,078.90/4,250.16 = 2,137.77/x
  3. Step 3: Cross multiply
    3,078.90x = 4,250.16 × 2,137.77
  4. Step 4: Simplify right side
    3,078.90x = 9,085,864.54
  5. Step 5: Solve for x
    x = 9,085,864.54/3,078.90
  6. Step 6: Final answer
    x = 2,951.01

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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.