Home / 4,289.56-6,428.52-1,821.29

Finding the Fourth Proportional to 4,289.56, 6,428.52 and 1,821.29

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Solution

The fourth proportional to 4,289.56, 6,428.52 and 1,821.29 is: 2,729.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,289.56 : 6,428.52 = 1,821.29 : x
  2. Step 2: Convert to fraction form
    4,289.56/6,428.52 = 1,821.29/x
  3. Step 3: Cross multiply
    4,289.56x = 6,428.52 × 1,821.29
  4. Step 4: Simplify right side
    4,289.56x = 11,708,167.05
  5. Step 5: Solve for x
    x = 11,708,167.05/4,289.56
  6. Step 6: Final answer
    x = 2,729.46

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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.