Home / 2,386.26-3,571.97-1,287.90

Finding the Fourth Proportional to 2,386.26, 3,571.97 and 1,287.90

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Solution

The fourth proportional to 2,386.26, 3,571.97 and 1,287.90 is: 1,927.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,386.26 : 3,571.97 = 1,287.90 : x
  2. Step 2: Convert to fraction form
    2,386.26/3,571.97 = 1,287.90/x
  3. Step 3: Cross multiply
    2,386.26x = 3,571.97 × 1,287.90
  4. Step 4: Simplify right side
    2,386.26x = 4,600,333.72
  5. Step 5: Solve for x
    x = 4,600,333.72/2,386.26
  6. Step 6: Final answer
    x = 1,927.84

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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.