Home / 7,915.46-11,868.80-3,238.75

Finding the Fourth Proportional to 7,915.46, 11,868.80 and 3,238.75

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Solution

The fourth proportional to 7,915.46, 11,868.80 and 3,238.75 is: 4,856.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,915.46 : 11,868.80 = 3,238.75 : x
  2. Step 2: Convert to fraction form
    7,915.46/11,868.80 = 3,238.75/x
  3. Step 3: Cross multiply
    7,915.46x = 11,868.80 × 3,238.75
  4. Step 4: Simplify right side
    7,915.46x = 38,440,076
  5. Step 5: Solve for x
    x = 38,440,076/7,915.46
  6. Step 6: Final answer
    x = 4,856.33

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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.