Home / 1,159.05-1,739.79-611.09

Finding the Fourth Proportional to 1,159.05, 1,739.79 and 611.09

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Solution

The fourth proportional to 1,159.05, 1,739.79 and 611.09 is: 917.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,159.05 : 1,739.79 = 611.09 : x
  2. Step 2: Convert to fraction form
    1,159.05/1,739.79 = 611.09/x
  3. Step 3: Cross multiply
    1,159.05x = 1,739.79 × 611.09
  4. Step 4: Simplify right side
    1,159.05x = 1,063,159.57
  5. Step 5: Solve for x
    x = 1,063,159.57/1,159.05
  6. Step 6: Final answer
    x = 917.27

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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.