Home / 2,720.14-4,078.56-1,485.84

Finding the Fourth Proportional to 2,720.14, 4,078.56 and 1,485.84

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Solution

The fourth proportional to 2,720.14, 4,078.56 and 1,485.84 is: 2,227.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,720.14 : 4,078.56 = 1,485.84 : x
  2. Step 2: Convert to fraction form
    2,720.14/4,078.56 = 1,485.84/x
  3. Step 3: Cross multiply
    2,720.14x = 4,078.56 × 1,485.84
  4. Step 4: Simplify right side
    2,720.14x = 6,060,087.59
  5. Step 5: Solve for x
    x = 6,060,087.59/2,720.14
  6. Step 6: Final answer
    x = 2,227.86

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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.