Home / 7,424.07-11,128.82-3,531.21

Finding the Fourth Proportional to 7,424.07, 11,128.82 and 3,531.21

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Solution

The fourth proportional to 7,424.07, 11,128.82 and 3,531.21 is: 5,293.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,424.07 : 11,128.82 = 3,531.21 : x
  2. Step 2: Convert to fraction form
    7,424.07/11,128.82 = 3,531.21/x
  3. Step 3: Cross multiply
    7,424.07x = 11,128.82 × 3,531.21
  4. Step 4: Simplify right side
    7,424.07x = 39,298,182.82
  5. Step 5: Solve for x
    x = 39,298,182.82/7,424.07
  6. Step 6: Final answer
    x = 5,293.35

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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.