Home / 7,137.28-10,704.10-3,438.54

Finding the Fourth Proportional to 7,137.28, 10,704.10 and 3,438.54

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Solution

The fourth proportional to 7,137.28, 10,704.10 and 3,438.54 is: 5,156.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,137.28 : 10,704.10 = 3,438.54 : x
  2. Step 2: Convert to fraction form
    7,137.28/10,704.10 = 3,438.54/x
  3. Step 3: Cross multiply
    7,137.28x = 10,704.10 × 3,438.54
  4. Step 4: Simplify right side
    7,137.28x = 36,806,476.01
  5. Step 5: Solve for x
    x = 36,806,476.01/7,137.28
  6. Step 6: Final answer
    x = 5,156.93

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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.