Home / 2,772.36-4,155.04-1,211.96

Finding the Fourth Proportional to 2,772.36, 4,155.04 and 1,211.96

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Solution

The fourth proportional to 2,772.36, 4,155.04 and 1,211.96 is: 1,816.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,772.36 : 4,155.04 = 1,211.96 : x
  2. Step 2: Convert to fraction form
    2,772.36/4,155.04 = 1,211.96/x
  3. Step 3: Cross multiply
    2,772.36x = 4,155.04 × 1,211.96
  4. Step 4: Simplify right side
    2,772.36x = 5,035,742.28
  5. Step 5: Solve for x
    x = 5,035,742.28/2,772.36
  6. Step 6: Final answer
    x = 1,816.41

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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.