Home / 2,817.30-4,221.90-1,256.03

Finding the Fourth Proportional to 2,817.30, 4,221.90 and 1,256.03

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Solution

The fourth proportional to 2,817.30, 4,221.90 and 1,256.03 is: 1,882.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,817.30 : 4,221.90 = 1,256.03 : x
  2. Step 2: Convert to fraction form
    2,817.30/4,221.90 = 1,256.03/x
  3. Step 3: Cross multiply
    2,817.30x = 4,221.90 × 1,256.03
  4. Step 4: Simplify right side
    2,817.30x = 5,302,811.95
  5. Step 5: Solve for x
    x = 5,302,811.95/2,817.30
  6. Step 6: Final answer
    x = 1,882.23

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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.