Home / 7,944.65-11,916.89-1,940.78

Finding the Fourth Proportional to 7,944.65, 11,916.89 and 1,940.78

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Solution

The fourth proportional to 7,944.65, 11,916.89 and 1,940.78 is: 2,911.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,944.65 : 11,916.89 = 1,940.78 : x
  2. Step 2: Convert to fraction form
    7,944.65/11,916.89 = 1,940.78/x
  3. Step 3: Cross multiply
    7,944.65x = 11,916.89 × 1,940.78
  4. Step 4: Simplify right side
    7,944.65x = 23,128,097.33
  5. Step 5: Solve for x
    x = 23,128,097.33/7,944.65
  6. Step 6: Final answer
    x = 2,911.15

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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.