Home / 7,928.78-11,892.22-2,085.84

Finding the Fourth Proportional to 7,928.78, 11,892.22 and 2,085.84

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Solution

The fourth proportional to 7,928.78, 11,892.22 and 2,085.84 is: 3,128.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,928.78 : 11,892.22 = 2,085.84 : x
  2. Step 2: Convert to fraction form
    7,928.78/11,892.22 = 2,085.84/x
  3. Step 3: Cross multiply
    7,928.78x = 11,892.22 × 2,085.84
  4. Step 4: Simplify right side
    7,928.78x = 24,805,268.16
  5. Step 5: Solve for x
    x = 24,805,268.16/7,928.78
  6. Step 6: Final answer
    x = 3,128.51

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1.5x scale

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.