Home / 2,028.80-2,801.40-1,283.96

Finding the Fourth Proportional to 2,028.80, 2,801.40 and 1,283.96

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Solution

The fourth proportional to 2,028.80, 2,801.40 and 1,283.96 is: 1,772.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,028.80 : 2,801.40 = 1,283.96 : x
  2. Step 2: Convert to fraction form
    2,028.80/2,801.40 = 1,283.96/x
  3. Step 3: Cross multiply
    2,028.80x = 2,801.40 × 1,283.96
  4. Step 4: Simplify right side
    2,028.80x = 3,596,885.54
  5. Step 5: Solve for x
    x = 3,596,885.54/2,028.80
  6. Step 6: Final answer
    x = 1,772.91

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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.