Home / 1,995.12-3,007.62-1,861.31

Finding the Fourth Proportional to 1,995.12, 3,007.62 and 1,861.31

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Solution

The fourth proportional to 1,995.12, 3,007.62 and 1,861.31 is: 2,805.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,995.12 : 3,007.62 = 1,861.31 : x
  2. Step 2: Convert to fraction form
    1,995.12/3,007.62 = 1,861.31/x
  3. Step 3: Cross multiply
    1,995.12x = 3,007.62 × 1,861.31
  4. Step 4: Simplify right side
    1,995.12x = 5,598,098.14
  5. Step 5: Solve for x
    x = 5,598,098.14/1,995.12
  6. Step 6: Final answer
    x = 2,805.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.