Home / 1,914.93-2,643.71-1,286.37

Finding the Fourth Proportional to 1,914.93, 2,643.71 and 1,286.37

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Solution

The fourth proportional to 1,914.93, 2,643.71 and 1,286.37 is: 1,775.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,914.93 : 2,643.71 = 1,286.37 : x
  2. Step 2: Convert to fraction form
    1,914.93/2,643.71 = 1,286.37/x
  3. Step 3: Cross multiply
    1,914.93x = 2,643.71 × 1,286.37
  4. Step 4: Simplify right side
    1,914.93x = 3,400,782.80
  5. Step 5: Solve for x
    x = 3,400,782.80/1,914.93
  6. Step 6: Final answer
    x = 1,775.93

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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.