Home / 5,915.50-8,163.40-3,431.50

Finding the Fourth Proportional to 5,915.50, 8,163.40 and 3,431.50

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Solution

The fourth proportional to 5,915.50, 8,163.40 and 3,431.50 is: 4,735.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,915.50 : 8,163.40 = 3,431.50 : x
  2. Step 2: Convert to fraction form
    5,915.50/8,163.40 = 3,431.50/x
  3. Step 3: Cross multiply
    5,915.50x = 8,163.40 × 3,431.50
  4. Step 4: Simplify right side
    5,915.50x = 28,012,707.10
  5. Step 5: Solve for x
    x = 28,012,707.10/5,915.50
  6. Step 6: Final answer
    x = 4,735.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.