Home / 1,786.13-2,466.17-1,289.87

Finding the Fourth Proportional to 1,786.13, 2,466.17 and 1,289.87

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Solution

The fourth proportional to 1,786.13, 2,466.17 and 1,289.87 is: 1,780.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,786.13 : 2,466.17 = 1,289.87 : x
  2. Step 2: Convert to fraction form
    1,786.13/2,466.17 = 1,289.87/x
  3. Step 3: Cross multiply
    1,786.13x = 2,466.17 × 1,289.87
  4. Step 4: Simplify right side
    1,786.13x = 3,181,032.25
  5. Step 5: Solve for x
    x = 3,181,032.25/1,786.13
  6. Step 6: Final answer
    x = 1,780.96

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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.