Home / 7,421.49-11,136.75-3,863.97

Finding the Fourth Proportional to 7,421.49, 11,136.75 and 3,863.97

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Solution

The fourth proportional to 7,421.49, 11,136.75 and 3,863.97 is: 5,798.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,421.49 : 11,136.75 = 3,863.97 : x
  2. Step 2: Convert to fraction form
    7,421.49/11,136.75 = 3,863.97/x
  3. Step 3: Cross multiply
    7,421.49x = 11,136.75 × 3,863.97
  4. Step 4: Simplify right side
    7,421.49x = 43,032,067.90
  5. Step 5: Solve for x
    x = 43,032,067.90/7,421.49
  6. Step 6: Final answer
    x = 5,798.31

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1.5x scale

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.