Home / 2,132.62-2,942.94-1,188.39

Finding the Fourth Proportional to 2,132.62, 2,942.94 and 1,188.39

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Solution

The fourth proportional to 2,132.62, 2,942.94 and 1,188.39 is: 1,639.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,132.62 : 2,942.94 = 1,188.39 : x
  2. Step 2: Convert to fraction form
    2,132.62/2,942.94 = 1,188.39/x
  3. Step 3: Cross multiply
    2,132.62x = 2,942.94 × 1,188.39
  4. Step 4: Simplify right side
    2,132.62x = 3,497,360.47
  5. Step 5: Solve for x
    x = 3,497,360.47/2,132.62
  6. Step 6: Final answer
    x = 1,639.94

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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.