Home / 1,279.40-1,919.09-1,033.36

Finding the Fourth Proportional to 1,279.40, 1,919.09 and 1,033.36

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Solution

The fourth proportional to 1,279.40, 1,919.09 and 1,033.36 is: 1,550.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279.40 : 1,919.09 = 1,033.36 : x
  2. Step 2: Convert to fraction form
    1,279.40/1,919.09 = 1,033.36/x
  3. Step 3: Cross multiply
    1,279.40x = 1,919.09 × 1,033.36
  4. Step 4: Simplify right side
    1,279.40x = 1,983,108.63
  5. Step 5: Solve for x
    x = 1,983,108.63/1,279.40
  6. Step 6: Final answer
    x = 1,550.04

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1.5x scale

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.