Home / 3,108.39-4,288.98-1,929.75

Finding the Fourth Proportional to 3,108.39, 4,288.98 and 1,929.75

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Solution

The fourth proportional to 3,108.39, 4,288.98 and 1,929.75 is: 2,662.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,108.39 : 4,288.98 = 1,929.75 : x
  2. Step 2: Convert to fraction form
    3,108.39/4,288.98 = 1,929.75/x
  3. Step 3: Cross multiply
    3,108.39x = 4,288.98 × 1,929.75
  4. Step 4: Simplify right side
    3,108.39x = 8,276,659.16
  5. Step 5: Solve for x
    x = 8,276,659.16/3,108.39
  6. Step 6: Final answer
    x = 2,662.68

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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.