Home / 7,122.28-10,682.70-1,928.68

Finding the Fourth Proportional to 7,122.28, 10,682.70 and 1,928.68

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Solution

The fourth proportional to 7,122.28, 10,682.70 and 1,928.68 is: 2,892.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,122.28 : 10,682.70 = 1,928.68 : x
  2. Step 2: Convert to fraction form
    7,122.28/10,682.70 = 1,928.68/x
  3. Step 3: Cross multiply
    7,122.28x = 10,682.70 × 1,928.68
  4. Step 4: Simplify right side
    7,122.28x = 20,603,509.84
  5. Step 5: Solve for x
    x = 20,603,509.84/7,122.28
  6. Step 6: Final answer
    x = 2,892.83

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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.