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Finding the Fourth Proportional to 1,332.84, 1,996.18 and 1,286.71

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Solution

The fourth proportional to 1,332.84, 1,996.18 and 1,286.71 is: 1,927.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,332.84 : 1,996.18 = 1,286.71 : x
  2. Step 2: Convert to fraction form
    1,332.84/1,996.18 = 1,286.71/x
  3. Step 3: Cross multiply
    1,332.84x = 1,996.18 × 1,286.71
  4. Step 4: Simplify right side
    1,332.84x = 2,568,504.77
  5. Step 5: Solve for x
    x = 2,568,504.77/1,332.84
  6. Step 6: Final answer
    x = 1,927.09

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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.