Home / 1,944.81-2,915.06-1,078.65

Finding the Fourth Proportional to 1,944.81, 2,915.06 and 1,078.65

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Solution

The fourth proportional to 1,944.81, 2,915.06 and 1,078.65 is: 1,616.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,944.81 : 2,915.06 = 1,078.65 : x
  2. Step 2: Convert to fraction form
    1,944.81/2,915.06 = 1,078.65/x
  3. Step 3: Cross multiply
    1,944.81x = 2,915.06 × 1,078.65
  4. Step 4: Simplify right side
    1,944.81x = 3,144,324.08
  5. Step 5: Solve for x
    x = 3,144,324.08/1,944.81
  6. Step 6: Final answer
    x = 1,616.78

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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.