Home / 7,920.33-11,880.51-3,536.61

Finding the Fourth Proportional to 7,920.33, 11,880.51 and 3,536.61

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Solution

The fourth proportional to 7,920.33, 11,880.51 and 3,536.61 is: 5,304.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,920.33 : 11,880.51 = 3,536.61 : x
  2. Step 2: Convert to fraction form
    7,920.33/11,880.51 = 3,536.61/x
  3. Step 3: Cross multiply
    7,920.33x = 11,880.51 × 3,536.61
  4. Step 4: Simplify right side
    7,920.33x = 42,016,730.47
  5. Step 5: Solve for x
    x = 42,016,730.47/7,920.33
  6. Step 6: Final answer
    x = 5,304.92

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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.