Home / 7,915.32-11,865.69-3,530.39

Finding the Fourth Proportional to 7,915.32, 11,865.69 and 3,530.39

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Solution

The fourth proportional to 7,915.32, 11,865.69 and 3,530.39 is: 5,292.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,915.32 : 11,865.69 = 3,530.39 : x
  2. Step 2: Convert to fraction form
    7,915.32/11,865.69 = 3,530.39/x
  3. Step 3: Cross multiply
    7,915.32x = 11,865.69 × 3,530.39
  4. Step 4: Simplify right side
    7,915.32x = 41,890,453.99
  5. Step 5: Solve for x
    x = 41,890,453.99/7,915.32
  6. Step 6: Final answer
    x = 5,292.33

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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.