Home / 1,914.68-2,643.36-1,286.12

Finding the Fourth Proportional to 1,914.68, 2,643.36 and 1,286.12

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Solution

The fourth proportional to 1,914.68, 2,643.36 and 1,286.12 is: 1,775.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,914.68 : 2,643.36 = 1,286.12 : x
  2. Step 2: Convert to fraction form
    1,914.68/2,643.36 = 1,286.12/x
  3. Step 3: Cross multiply
    1,914.68x = 2,643.36 × 1,286.12
  4. Step 4: Simplify right side
    1,914.68x = 3,399,678.16
  5. Step 5: Solve for x
    x = 3,399,678.16/1,914.68
  6. Step 6: Final answer
    x = 1,775.59

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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.