Home / 1,219.44-1,838.27-1,115.65

Finding the Fourth Proportional to 1,219.44, 1,838.27 and 1,115.65

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Solution

The fourth proportional to 1,219.44, 1,838.27 and 1,115.65 is: 1,681.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,219.44 : 1,838.27 = 1,115.65 : x
  2. Step 2: Convert to fraction form
    1,219.44/1,838.27 = 1,115.65/x
  3. Step 3: Cross multiply
    1,219.44x = 1,838.27 × 1,115.65
  4. Step 4: Simplify right side
    1,219.44x = 2,050,865.93
  5. Step 5: Solve for x
    x = 2,050,865.93/1,219.44
  6. Step 6: Final answer
    x = 1,681.81

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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.