Home / 3,915.21-5,868.86-2,455.38

Finding the Fourth Proportional to 3,915.21, 5,868.86 and 2,455.38

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Solution

The fourth proportional to 3,915.21, 5,868.86 and 2,455.38 is: 3,680.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,915.21 : 5,868.86 = 2,455.38 : x
  2. Step 2: Convert to fraction form
    3,915.21/5,868.86 = 2,455.38/x
  3. Step 3: Cross multiply
    3,915.21x = 5,868.86 × 2,455.38
  4. Step 4: Simplify right side
    3,915.21x = 14,410,269.19
  5. Step 5: Solve for x
    x = 14,410,269.19/3,915.21
  6. Step 6: Final answer
    x = 3,680.59

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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.