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Finding the Fourth Proportional to 3,616.39, 4,990.59 and 1,960.39

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Solution

The fourth proportional to 3,616.39, 4,990.59 and 1,960.39 is: 2,705.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,616.39 : 4,990.59 = 1,960.39 : x
  2. Step 2: Convert to fraction form
    3,616.39/4,990.59 = 1,960.39/x
  3. Step 3: Cross multiply
    3,616.39x = 4,990.59 × 1,960.39
  4. Step 4: Simplify right side
    3,616.39x = 9,783,502.73
  5. Step 5: Solve for x
    x = 9,783,502.73/3,616.39
  6. Step 6: Final answer
    x = 2,705.32

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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.