Home / 1,469.28-2,026.92-1,190.40

Finding the Fourth Proportional to 1,469.28, 2,026.92 and 1,190.40

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Solution

The fourth proportional to 1,469.28, 2,026.92 and 1,190.40 is: 1,642.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,469.28 : 2,026.92 = 1,190.40 : x
  2. Step 2: Convert to fraction form
    1,469.28/2,026.92 = 1,190.40/x
  3. Step 3: Cross multiply
    1,469.28x = 2,026.92 × 1,190.40
  4. Step 4: Simplify right side
    1,469.28x = 2,412,845.57
  5. Step 5: Solve for x
    x = 2,412,845.57/1,469.28
  6. Step 6: Final answer
    x = 1,642.20

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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.