Home / 1,939.23-2,676.69-1,231.08

Finding the Fourth Proportional to 1,939.23, 2,676.69 and 1,231.08

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Solution

The fourth proportional to 1,939.23, 2,676.69 and 1,231.08 is: 1,699.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,939.23 : 2,676.69 = 1,231.08 : x
  2. Step 2: Convert to fraction form
    1,939.23/2,676.69 = 1,231.08/x
  3. Step 3: Cross multiply
    1,939.23x = 2,676.69 × 1,231.08
  4. Step 4: Simplify right side
    1,939.23x = 3,295,219.53
  5. Step 5: Solve for x
    x = 3,295,219.53/1,939.23
  6. Step 6: Final answer
    x = 1,699.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.