Home / 2,721.94-4,087.38-1,786.40

Finding the Fourth Proportional to 2,721.94, 4,087.38 and 1,786.40

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Solution

The fourth proportional to 2,721.94, 4,087.38 and 1,786.40 is: 2,682.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,721.94 : 4,087.38 = 1,786.40 : x
  2. Step 2: Convert to fraction form
    2,721.94/4,087.38 = 1,786.40/x
  3. Step 3: Cross multiply
    2,721.94x = 4,087.38 × 1,786.40
  4. Step 4: Simplify right side
    2,721.94x = 7,301,695.63
  5. Step 5: Solve for x
    x = 7,301,695.63/2,721.94
  6. Step 6: Final answer
    x = 2,682.53

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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.