Home / 1,786.05-2,461.41-1,287.84

Finding the Fourth Proportional to 1,786.05, 2,461.41 and 1,287.84

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Solution

The fourth proportional to 1,786.05, 2,461.41 and 1,287.84 is: 1,774.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,786.05 : 2,461.41 = 1,287.84 : x
  2. Step 2: Convert to fraction form
    1,786.05/2,461.41 = 1,287.84/x
  3. Step 3: Cross multiply
    1,786.05x = 2,461.41 × 1,287.84
  4. Step 4: Simplify right side
    1,786.05x = 3,169,902.25
  5. Step 5: Solve for x
    x = 3,169,902.25/1,786.05
  6. Step 6: Final answer
    x = 1,774.81

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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.