Home / 1,916.06-2,644.14-1,076.78

Finding the Fourth Proportional to 1,916.06, 2,644.14 and 1,076.78

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Solution

The fourth proportional to 1,916.06, 2,644.14 and 1,076.78 is: 1,485.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,916.06 : 2,644.14 = 1,076.78 : x
  2. Step 2: Convert to fraction form
    1,916.06/2,644.14 = 1,076.78/x
  3. Step 3: Cross multiply
    1,916.06x = 2,644.14 × 1,076.78
  4. Step 4: Simplify right side
    1,916.06x = 2,847,143.85
  5. Step 5: Solve for x
    x = 2,847,143.85/1,916.06
  6. Step 6: Final answer
    x = 1,485.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.