Home / 6,928.47-10,390.28-1,996.79

Finding the Fourth Proportional to 6,928.47, 10,390.28 and 1,996.79

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Solution

The fourth proportional to 6,928.47, 10,390.28 and 1,996.79 is: 2,994.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,928.47 : 10,390.28 = 1,996.79 : x
  2. Step 2: Convert to fraction form
    6,928.47/10,390.28 = 1,996.79/x
  3. Step 3: Cross multiply
    6,928.47x = 10,390.28 × 1,996.79
  4. Step 4: Simplify right side
    6,928.47x = 20,747,145.27
  5. Step 5: Solve for x
    x = 20,747,145.27/6,928.47
  6. Step 6: Final answer
    x = 2,994.48

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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.