Home / 1,491.20-2,067.27-1,412.21

Finding the Fourth Proportional to 1,491.20, 2,067.27 and 1,412.21

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Solution

The fourth proportional to 1,491.20, 2,067.27 and 1,412.21 is: 1,957.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,491.20 : 2,067.27 = 1,412.21 : x
  2. Step 2: Convert to fraction form
    1,491.20/2,067.27 = 1,412.21/x
  3. Step 3: Cross multiply
    1,491.20x = 2,067.27 × 1,412.21
  4. Step 4: Simplify right side
    1,491.20x = 2,919,409.03
  5. Step 5: Solve for x
    x = 2,919,409.03/1,491.20
  6. Step 6: Final answer
    x = 1,957.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.