Home / 1,916.80-2,645.44-1,120.37

Finding the Fourth Proportional to 1,916.80, 2,645.44 and 1,120.37

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Solution

The fourth proportional to 1,916.80, 2,645.44 and 1,120.37 is: 1,546.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,916.80 : 2,645.44 = 1,120.37 : x
  2. Step 2: Convert to fraction form
    1,916.80/2,645.44 = 1,120.37/x
  3. Step 3: Cross multiply
    1,916.80x = 2,645.44 × 1,120.37
  4. Step 4: Simplify right side
    1,916.80x = 2,963,855.58
  5. Step 5: Solve for x
    x = 2,963,855.58/1,916.80
  6. Step 6: Final answer
    x = 1,546.25

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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.