Home / 1,789.35-2,469.51-1,191.81

Finding the Fourth Proportional to 1,789.35, 2,469.51 and 1,191.81

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Solution

The fourth proportional to 1,789.35, 2,469.51 and 1,191.81 is: 1,644.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,789.35 : 2,469.51 = 1,191.81 : x
  2. Step 2: Convert to fraction form
    1,789.35/2,469.51 = 1,191.81/x
  3. Step 3: Cross multiply
    1,789.35x = 2,469.51 × 1,191.81
  4. Step 4: Simplify right side
    1,789.35x = 2,943,186.71
  5. Step 5: Solve for x
    x = 2,943,186.71/1,789.35
  6. Step 6: Final answer
    x = 1,644.84

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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.