Home / 1,781.39-2,668.44-1,048.79

Finding the Fourth Proportional to 1,781.39, 2,668.44 and 1,048.79

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Solution

The fourth proportional to 1,781.39, 2,668.44 and 1,048.79 is: 1,571.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,781.39 : 2,668.44 = 1,048.79 : x
  2. Step 2: Convert to fraction form
    1,781.39/2,668.44 = 1,048.79/x
  3. Step 3: Cross multiply
    1,781.39x = 2,668.44 × 1,048.79
  4. Step 4: Simplify right side
    1,781.39x = 2,798,633.19
  5. Step 5: Solve for x
    x = 2,798,633.19/1,781.39
  6. Step 6: Final answer
    x = 1,571.04

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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.