Home / 3,181.26-4,390.05-1,923.36

Finding the Fourth Proportional to 3,181.26, 4,390.05 and 1,923.36

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Solution

The fourth proportional to 3,181.26, 4,390.05 and 1,923.36 is: 2,654.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,181.26 : 4,390.05 = 1,923.36 : x
  2. Step 2: Convert to fraction form
    3,181.26/4,390.05 = 1,923.36/x
  3. Step 3: Cross multiply
    3,181.26x = 4,390.05 × 1,923.36
  4. Step 4: Simplify right side
    3,181.26x = 8,443,646.57
  5. Step 5: Solve for x
    x = 8,443,646.57/3,181.26
  6. Step 6: Final answer
    x = 2,654.18

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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.