Home / 3,991.23-5,987.56-1,358.60

Finding the Fourth Proportional to 3,991.23, 5,987.56 and 1,358.60

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Solution

The fourth proportional to 3,991.23, 5,987.56 and 1,358.60 is: 2,038.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,991.23 : 5,987.56 = 1,358.60 : x
  2. Step 2: Convert to fraction form
    3,991.23/5,987.56 = 1,358.60/x
  3. Step 3: Cross multiply
    3,991.23x = 5,987.56 × 1,358.60
  4. Step 4: Simplify right side
    3,991.23x = 8,134,699.02
  5. Step 5: Solve for x
    x = 8,134,699.02/3,991.23
  6. Step 6: Final answer
    x = 2,038.14

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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.