Home / 2,817.51-4,220.09-1,428.46

Finding the Fourth Proportional to 2,817.51, 4,220.09 and 1,428.46

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Solution

The fourth proportional to 2,817.51, 4,220.09 and 1,428.46 is: 2,139.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,817.51 : 4,220.09 = 1,428.46 : x
  2. Step 2: Convert to fraction form
    2,817.51/4,220.09 = 1,428.46/x
  3. Step 3: Cross multiply
    2,817.51x = 4,220.09 × 1,428.46
  4. Step 4: Simplify right side
    2,817.51x = 6,028,217.43
  5. Step 5: Solve for x
    x = 6,028,217.43/2,817.51
  6. Step 6: Final answer
    x = 2,139.56

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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.