Home / 2,132.73-2,942.93-1,188.32

Finding the Fourth Proportional to 2,132.73, 2,942.93 and 1,188.32

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Solution

The fourth proportional to 2,132.73, 2,942.93 and 1,188.32 is: 1,639.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,132.73 : 2,942.93 = 1,188.32 : x
  2. Step 2: Convert to fraction form
    2,132.73/2,942.93 = 1,188.32/x
  3. Step 3: Cross multiply
    2,132.73x = 2,942.93 × 1,188.32
  4. Step 4: Simplify right side
    2,132.73x = 3,497,147.39
  5. Step 5: Solve for x
    x = 3,497,147.39/2,132.73
  6. Step 6: Final answer
    x = 1,639.75

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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.