Home / 5,324.16-7,986.72-1,428.54

Finding the Fourth Proportional to 5,324.16, 7,986.72 and 1,428.54

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Solution

The fourth proportional to 5,324.16, 7,986.72 and 1,428.54 is: 2,142.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,324.16 : 7,986.72 = 1,428.54 : x
  2. Step 2: Convert to fraction form
    5,324.16/7,986.72 = 1,428.54/x
  3. Step 3: Cross multiply
    5,324.16x = 7,986.72 × 1,428.54
  4. Step 4: Simplify right side
    5,324.16x = 11,409,348.99
  5. Step 5: Solve for x
    x = 11,409,348.99/5,324.16
  6. Step 6: Final answer
    x = 2,142.94

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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.