Home / 2,945.90-4,066.62-1,949.42

Finding the Fourth Proportional to 2,945.90, 4,066.62 and 1,949.42

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Solution

The fourth proportional to 2,945.90, 4,066.62 and 1,949.42 is: 2,691.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,945.90 : 4,066.62 = 1,949.42 : x
  2. Step 2: Convert to fraction form
    2,945.90/4,066.62 = 1,949.42/x
  3. Step 3: Cross multiply
    2,945.90x = 4,066.62 × 1,949.42
  4. Step 4: Simplify right side
    2,945.90x = 7,927,550.36
  5. Step 5: Solve for x
    x = 7,927,550.36/2,945.90
  6. Step 6: Final answer
    x = 2,691.05

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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.