Home / 2,108.39-2,908.99-1,362.38

Finding the Fourth Proportional to 2,108.39, 2,908.99 and 1,362.38

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Solution

The fourth proportional to 2,108.39, 2,908.99 and 1,362.38 is: 1,879.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,108.39 : 2,908.99 = 1,362.38 : x
  2. Step 2: Convert to fraction form
    2,108.39/2,908.99 = 1,362.38/x
  3. Step 3: Cross multiply
    2,108.39x = 2,908.99 × 1,362.38
  4. Step 4: Simplify right side
    2,108.39x = 3,963,149.80
  5. Step 5: Solve for x
    x = 3,963,149.80/2,108.39
  6. Step 6: Final answer
    x = 1,879.70

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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.