Home / 7,911.51-11,860.26-2,981.37

Finding the Fourth Proportional to 7,911.51, 11,860.26 and 2,981.37

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Solution

The fourth proportional to 7,911.51, 11,860.26 and 2,981.37 is: 4,469.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,911.51 : 11,860.26 = 2,981.37 : x
  2. Step 2: Convert to fraction form
    7,911.51/11,860.26 = 2,981.37/x
  3. Step 3: Cross multiply
    7,911.51x = 11,860.26 × 2,981.37
  4. Step 4: Simplify right side
    7,911.51x = 35,359,823.36
  5. Step 5: Solve for x
    x = 35,359,823.36/7,911.51
  6. Step 6: Final answer
    x = 4,469.42

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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.