Home / 7,121.97-10,682.95-1,928.25

Finding the Fourth Proportional to 7,121.97, 10,682.95 and 1,928.25

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Solution

The fourth proportional to 7,121.97, 10,682.95 and 1,928.25 is: 2,892.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,121.97 : 10,682.95 = 1,928.25 : x
  2. Step 2: Convert to fraction form
    7,121.97/10,682.95 = 1,928.25/x
  3. Step 3: Cross multiply
    7,121.97x = 10,682.95 × 1,928.25
  4. Step 4: Simplify right side
    7,121.97x = 20,599,398.34
  5. Step 5: Solve for x
    x = 20,599,398.34/7,121.97
  6. Step 6: Final answer
    x = 2,892.37

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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.