Home / 2,108.49-3,155.18-1,286.97

Finding the Fourth Proportional to 2,108.49, 3,155.18 and 1,286.97

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Solution

The fourth proportional to 2,108.49, 3,155.18 and 1,286.97 is: 1,925.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,108.49 : 3,155.18 = 1,286.97 : x
  2. Step 2: Convert to fraction form
    2,108.49/3,155.18 = 1,286.97/x
  3. Step 3: Cross multiply
    2,108.49x = 3,155.18 × 1,286.97
  4. Step 4: Simplify right side
    2,108.49x = 4,060,615.57
  5. Step 5: Solve for x
    x = 4,060,615.57/2,108.49
  6. Step 6: Final answer
    x = 1,925.84

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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.