Home / 7,122.24-10,683.36-1,928.88

Finding the Fourth Proportional to 7,122.24, 10,683.36 and 1,928.88

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Solution

The fourth proportional to 7,122.24, 10,683.36 and 1,928.88 is: 2,893.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,122.24 : 10,683.36 = 1,928.88 : x
  2. Step 2: Convert to fraction form
    7,122.24/10,683.36 = 1,928.88/x
  3. Step 3: Cross multiply
    7,122.24x = 10,683.36 × 1,928.88
  4. Step 4: Simplify right side
    7,122.24x = 20,606,919.44
  5. Step 5: Solve for x
    x = 20,606,919.44/7,122.24
  6. Step 6: Final answer
    x = 2,893.32

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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.