Home / 7,938.80-11,912.26-3,262.40

Finding the Fourth Proportional to 7,938.80, 11,912.26 and 3,262.40

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Solution

The fourth proportional to 7,938.80, 11,912.26 and 3,262.40 is: 4,895.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,938.80 : 11,912.26 = 3,262.40 : x
  2. Step 2: Convert to fraction form
    7,938.80/11,912.26 = 3,262.40/x
  3. Step 3: Cross multiply
    7,938.80x = 11,912.26 × 3,262.40
  4. Step 4: Simplify right side
    7,938.80x = 38,862,557.02
  5. Step 5: Solve for x
    x = 38,862,557.02/7,938.80
  6. Step 6: Final answer
    x = 4,895.27

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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.