Home / 1,954.38-2,931.57-1,189.74

Finding the Fourth Proportional to 1,954.38, 2,931.57 and 1,189.74

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Solution

The fourth proportional to 1,954.38, 2,931.57 and 1,189.74 is: 1,784.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,954.38 : 2,931.57 = 1,189.74 : x
  2. Step 2: Convert to fraction form
    1,954.38/2,931.57 = 1,189.74/x
  3. Step 3: Cross multiply
    1,954.38x = 2,931.57 × 1,189.74
  4. Step 4: Simplify right side
    1,954.38x = 3,487,806.09
  5. Step 5: Solve for x
    x = 3,487,806.09/1,954.38
  6. Step 6: Final answer
    x = 1,784.61

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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.