Home / 3,984.51-5,974.33-1,643.79

Finding the Fourth Proportional to 3,984.51, 5,974.33 and 1,643.79

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Solution

The fourth proportional to 3,984.51, 5,974.33 and 1,643.79 is: 2,464.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,984.51 : 5,974.33 = 1,643.79 : x
  2. Step 2: Convert to fraction form
    3,984.51/5,974.33 = 1,643.79/x
  3. Step 3: Cross multiply
    3,984.51x = 5,974.33 × 1,643.79
  4. Step 4: Simplify right side
    3,984.51x = 9,820,543.91
  5. Step 5: Solve for x
    x = 9,820,543.91/3,984.51
  6. Step 6: Final answer
    x = 2,464.68

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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.