Home / 3,110.20-4,665.30-919.06

Finding the Fourth Proportional to 3,110.20, 4,665.30 and 919.06

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Solution

The fourth proportional to 3,110.20, 4,665.30 and 919.06 is: 1,378.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,110.20 : 4,665.30 = 919.06 : x
  2. Step 2: Convert to fraction form
    3,110.20/4,665.30 = 919.06/x
  3. Step 3: Cross multiply
    3,110.20x = 4,665.30 × 919.06
  4. Step 4: Simplify right side
    3,110.20x = 4,287,690.62
  5. Step 5: Solve for x
    x = 4,287,690.62/3,110.20
  6. Step 6: Final answer
    x = 1,378.59

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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.