Home / 1,916.43-2,644.67-1,120.30

Finding the Fourth Proportional to 1,916.43, 2,644.67 and 1,120.30

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Solution

The fourth proportional to 1,916.43, 2,644.67 and 1,120.30 is: 1,546.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,916.43 : 2,644.67 = 1,120.30 : x
  2. Step 2: Convert to fraction form
    1,916.43/2,644.67 = 1,120.30/x
  3. Step 3: Cross multiply
    1,916.43x = 2,644.67 × 1,120.30
  4. Step 4: Simplify right side
    1,916.43x = 2,962,823.80
  5. Step 5: Solve for x
    x = 2,962,823.80/1,916.43
  6. Step 6: Final answer
    x = 1,546.01

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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.