Home / 2,786.25-4,179.93-1,247.25

Finding the Fourth Proportional to 2,786.25, 4,179.93 and 1,247.25

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Solution

The fourth proportional to 2,786.25, 4,179.93 and 1,247.25 is: 1,871.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,786.25 : 4,179.93 = 1,247.25 : x
  2. Step 2: Convert to fraction form
    2,786.25/4,179.93 = 1,247.25/x
  3. Step 3: Cross multiply
    2,786.25x = 4,179.93 × 1,247.25
  4. Step 4: Simplify right side
    2,786.25x = 5,213,417.69
  5. Step 5: Solve for x
    x = 5,213,417.69/2,786.25
  6. Step 6: Final answer
    x = 1,871.12

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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.