Home / 7,928.28-11,892.32-2,381.40

Finding the Fourth Proportional to 7,928.28, 11,892.32 and 2,381.40

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Solution

The fourth proportional to 7,928.28, 11,892.32 and 2,381.40 is: 3,572.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,928.28 : 11,892.32 = 2,381.40 : x
  2. Step 2: Convert to fraction form
    7,928.28/11,892.32 = 2,381.40/x
  3. Step 3: Cross multiply
    7,928.28x = 11,892.32 × 2,381.40
  4. Step 4: Simplify right side
    7,928.28x = 28,320,367.87
  5. Step 5: Solve for x
    x = 28,320,367.87/7,928.28
  6. Step 6: Final answer
    x = 3,572.07

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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.