Home / 3,110.20-4,665.30-1,958.20

Finding the Fourth Proportional to 3,110.20, 4,665.30 and 1,958.20

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Solution

The fourth proportional to 3,110.20, 4,665.30 and 1,958.20 is: 2,937.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,110.20 : 4,665.30 = 1,958.20 : x
  2. Step 2: Convert to fraction form
    3,110.20/4,665.30 = 1,958.20/x
  3. Step 3: Cross multiply
    3,110.20x = 4,665.30 × 1,958.20
  4. Step 4: Simplify right side
    3,110.20x = 9,135,590.46
  5. Step 5: Solve for x
    x = 9,135,590.46/3,110.20
  6. Step 6: Final answer
    x = 2,937.30

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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.