Home / 4,938.70-7,408.50-1,428.66

Finding the Fourth Proportional to 4,938.70, 7,408.50 and 1,428.66

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Solution

The fourth proportional to 4,938.70, 7,408.50 and 1,428.66 is: 2,143.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,938.70 : 7,408.50 = 1,428.66 : x
  2. Step 2: Convert to fraction form
    4,938.70/7,408.50 = 1,428.66/x
  3. Step 3: Cross multiply
    4,938.70x = 7,408.50 × 1,428.66
  4. Step 4: Simplify right side
    4,938.70x = 10,584,183.42
  5. Step 5: Solve for x
    x = 10,584,183.42/4,938.70
  6. Step 6: Final answer
    x = 2,143.11

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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.