Home / 2,815.60-4,220.94-1,083

Finding the Fourth Proportional to 2,815.60, 4,220.94 and 1,083

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Solution

The fourth proportional to 2,815.60, 4,220.94 and 1,083 is: 1,623.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,815.60 : 4,220.94 = 1,083 : x
  2. Step 2: Convert to fraction form
    2,815.60/4,220.94 = 1,083/x
  3. Step 3: Cross multiply
    2,815.60x = 4,220.94 × 1,083
  4. Step 4: Simplify right side
    2,815.60x = 4,571,278.02
  5. Step 5: Solve for x
    x = 4,571,278.02/2,815.60
  6. Step 6: Final answer
    x = 1,623.55

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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.