Home / 2,722.07-4,078.20-1,898.75

Finding the Fourth Proportional to 2,722.07, 4,078.20 and 1,898.75

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Solution

The fourth proportional to 2,722.07, 4,078.20 and 1,898.75 is: 2,844.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,722.07 : 4,078.20 = 1,898.75 : x
  2. Step 2: Convert to fraction form
    2,722.07/4,078.20 = 1,898.75/x
  3. Step 3: Cross multiply
    2,722.07x = 4,078.20 × 1,898.75
  4. Step 4: Simplify right side
    2,722.07x = 7,743,482.25
  5. Step 5: Solve for x
    x = 7,743,482.25/2,722.07
  6. Step 6: Final answer
    x = 2,844.70

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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.