Home / 1,786.58-2,681.62-1,137.76

Finding the Fourth Proportional to 1,786.58, 2,681.62 and 1,137.76

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Solution

The fourth proportional to 1,786.58, 2,681.62 and 1,137.76 is: 1,707.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,786.58 : 2,681.62 = 1,137.76 : x
  2. Step 2: Convert to fraction form
    1,786.58/2,681.62 = 1,137.76/x
  3. Step 3: Cross multiply
    1,786.58x = 2,681.62 × 1,137.76
  4. Step 4: Simplify right side
    1,786.58x = 3,051,039.97
  5. Step 5: Solve for x
    x = 3,051,039.97/1,786.58
  6. Step 6: Final answer
    x = 1,707.75

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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.