Home / 3,119.62-4,680.22-928.30

Finding the Fourth Proportional to 3,119.62, 4,680.22 and 928.30

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Solution

The fourth proportional to 3,119.62, 4,680.22 and 928.30 is: 1,392.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119.62 : 4,680.22 = 928.30 : x
  2. Step 2: Convert to fraction form
    3,119.62/4,680.22 = 928.30/x
  3. Step 3: Cross multiply
    3,119.62x = 4,680.22 × 928.30
  4. Step 4: Simplify right side
    3,119.62x = 4,344,648.23
  5. Step 5: Solve for x
    x = 4,344,648.23/3,119.62
  6. Step 6: Final answer
    x = 1,392.69

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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.