Home / 3,119.52-4,680.16-928.24

Finding the Fourth Proportional to 3,119.52, 4,680.16 and 928.24

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Solution

The fourth proportional to 3,119.52, 4,680.16 and 928.24 is: 1,392.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119.52 : 4,680.16 = 928.24 : x
  2. Step 2: Convert to fraction form
    3,119.52/4,680.16 = 928.24/x
  3. Step 3: Cross multiply
    3,119.52x = 4,680.16 × 928.24
  4. Step 4: Simplify right side
    3,119.52x = 4,344,311.72
  5. Step 5: Solve for x
    x = 4,344,311.72/3,119.52
  6. Step 6: Final answer
    x = 1,392.62

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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.