Home / 1,945.38-2,685.62-1,319.22

Finding the Fourth Proportional to 1,945.38, 2,685.62 and 1,319.22

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Solution

The fourth proportional to 1,945.38, 2,685.62 and 1,319.22 is: 1,821.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,945.38 : 2,685.62 = 1,319.22 : x
  2. Step 2: Convert to fraction form
    1,945.38/2,685.62 = 1,319.22/x
  3. Step 3: Cross multiply
    1,945.38x = 2,685.62 × 1,319.22
  4. Step 4: Simplify right side
    1,945.38x = 3,542,926.91
  5. Step 5: Solve for x
    x = 3,542,926.91/1,945.38
  6. Step 6: Final answer
    x = 1,821.20

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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.