Home / 2,132.96-2,943.45-1,188.73

Finding the Fourth Proportional to 2,132.96, 2,943.45 and 1,188.73

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Solution

The fourth proportional to 2,132.96, 2,943.45 and 1,188.73 is: 1,640.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,132.96 : 2,943.45 = 1,188.73 : x
  2. Step 2: Convert to fraction form
    2,132.96/2,943.45 = 1,188.73/x
  3. Step 3: Cross multiply
    2,132.96x = 2,943.45 × 1,188.73
  4. Step 4: Simplify right side
    2,132.96x = 3,498,967.32
  5. Step 5: Solve for x
    x = 3,498,967.32/2,132.96
  6. Step 6: Final answer
    x = 1,640.43

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Double scale
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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.