Home / 2,817.09-4,219.48-1,428.04

Finding the Fourth Proportional to 2,817.09, 4,219.48 and 1,428.04

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Solution

The fourth proportional to 2,817.09, 4,219.48 and 1,428.04 is: 2,138.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,817.09 : 4,219.48 = 1,428.04 : x
  2. Step 2: Convert to fraction form
    2,817.09/4,219.48 = 1,428.04/x
  3. Step 3: Cross multiply
    2,817.09x = 4,219.48 × 1,428.04
  4. Step 4: Simplify right side
    2,817.09x = 6,025,586.22
  5. Step 5: Solve for x
    x = 6,025,586.22/2,817.09
  6. Step 6: Final answer
    x = 2,138.94

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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.