Home / 7,949.88-11,916.05-3,994.79

Finding the Fourth Proportional to 7,949.88, 11,916.05 and 3,994.79

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Solution

The fourth proportional to 7,949.88, 11,916.05 and 3,994.79 is: 5,987.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,949.88 : 11,916.05 = 3,994.79 : x
  2. Step 2: Convert to fraction form
    7,949.88/11,916.05 = 3,994.79/x
  3. Step 3: Cross multiply
    7,949.88x = 11,916.05 × 3,994.79
  4. Step 4: Simplify right side
    7,949.88x = 47,602,037.83
  5. Step 5: Solve for x
    x = 47,602,037.83/7,949.88
  6. Step 6: Final answer
    x = 5,987.77

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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.