Home / 2,262.39-3,121.81-1,318.49

Finding the Fourth Proportional to 2,262.39, 3,121.81 and 1,318.49

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Solution

The fourth proportional to 2,262.39, 3,121.81 and 1,318.49 is: 1,819.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,262.39 : 3,121.81 = 1,318.49 : x
  2. Step 2: Convert to fraction form
    2,262.39/3,121.81 = 1,318.49/x
  3. Step 3: Cross multiply
    2,262.39x = 3,121.81 × 1,318.49
  4. Step 4: Simplify right side
    2,262.39x = 4,116,056.36
  5. Step 5: Solve for x
    x = 4,116,056.36/2,262.39
  6. Step 6: Final answer
    x = 1,819.34

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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.