Home / 3,984.38-5,971.64-1,642.90

Finding the Fourth Proportional to 3,984.38, 5,971.64 and 1,642.90

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Solution

The fourth proportional to 3,984.38, 5,971.64 and 1,642.90 is: 2,462.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,984.38 : 5,971.64 = 1,642.90 : x
  2. Step 2: Convert to fraction form
    3,984.38/5,971.64 = 1,642.90/x
  3. Step 3: Cross multiply
    3,984.38x = 5,971.64 × 1,642.90
  4. Step 4: Simplify right side
    3,984.38x = 9,810,807.36
  5. Step 5: Solve for x
    x = 9,810,807.36/3,984.38
  6. Step 6: Final answer
    x = 2,462.32

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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.