Home / 7,954.50-11,929.78-2,689.39

Finding the Fourth Proportional to 7,954.50, 11,929.78 and 2,689.39

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Solution

The fourth proportional to 7,954.50, 11,929.78 and 2,689.39 is: 4,033.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,954.50 : 11,929.78 = 2,689.39 : x
  2. Step 2: Convert to fraction form
    7,954.50/11,929.78 = 2,689.39/x
  3. Step 3: Cross multiply
    7,954.50x = 11,929.78 × 2,689.39
  4. Step 4: Simplify right side
    7,954.50x = 32,083,849.31
  5. Step 5: Solve for x
    x = 32,083,849.31/7,954.50
  6. Step 6: Final answer
    x = 4,033.42

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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.