Home / 7,934.25-11,900.75-3,981.47

Finding the Fourth Proportional to 7,934.25, 11,900.75 and 3,981.47

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Solution

The fourth proportional to 7,934.25, 11,900.75 and 3,981.47 is: 5,971.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,934.25 : 11,900.75 = 3,981.47 : x
  2. Step 2: Convert to fraction form
    7,934.25/11,900.75 = 3,981.47/x
  3. Step 3: Cross multiply
    7,934.25x = 11,900.75 × 3,981.47
  4. Step 4: Simplify right side
    7,934.25x = 47,382,466.63
  5. Step 5: Solve for x
    x = 47,382,466.63/7,934.25
  6. Step 6: Final answer
    x = 5,971.89

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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.