Home / 7,961.36-11,938.96-3,518.80

Finding the Fourth Proportional to 7,961.36, 11,938.96 and 3,518.80

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Solution

The fourth proportional to 7,961.36, 11,938.96 and 3,518.80 is: 5,276.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,961.36 : 11,938.96 = 3,518.80 : x
  2. Step 2: Convert to fraction form
    7,961.36/11,938.96 = 3,518.80/x
  3. Step 3: Cross multiply
    7,961.36x = 11,938.96 × 3,518.80
  4. Step 4: Simplify right side
    7,961.36x = 42,010,812.45
  5. Step 5: Solve for x
    x = 42,010,812.45/7,961.36
  6. Step 6: Final answer
    x = 5,276.84

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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.