Home / 3,991.19-5,987.39-1,393.52

Finding the Fourth Proportional to 3,991.19, 5,987.39 and 1,393.52

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Solution

The fourth proportional to 3,991.19, 5,987.39 and 1,393.52 is: 2,090.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,991.19 : 5,987.39 = 1,393.52 : x
  2. Step 2: Convert to fraction form
    3,991.19/5,987.39 = 1,393.52/x
  3. Step 3: Cross multiply
    3,991.19x = 5,987.39 × 1,393.52
  4. Step 4: Simplify right side
    3,991.19x = 8,343,510.81
  5. Step 5: Solve for x
    x = 8,343,510.81/3,991.19
  6. Step 6: Final answer
    x = 2,090.48

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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.