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Finding the Fourth Proportional to 3,347.28, 5,021.28 and 1,889.28

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Solution

The fourth proportional to 3,347.28, 5,021.28 and 1,889.28 is: 2,834.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,347.28 : 5,021.28 = 1,889.28 : x
  2. Step 2: Convert to fraction form
    3,347.28/5,021.28 = 1,889.28/x
  3. Step 3: Cross multiply
    3,347.28x = 5,021.28 × 1,889.28
  4. Step 4: Simplify right side
    3,347.28x = 9,486,603.88
  5. Step 5: Solve for x
    x = 9,486,603.88/3,347.28
  6. Step 6: Final answer
    x = 2,834.12

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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.