Home / 2,161.68-2,982.95-1,277.33

Finding the Fourth Proportional to 2,161.68, 2,982.95 and 1,277.33

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Solution

The fourth proportional to 2,161.68, 2,982.95 and 1,277.33 is: 1,762.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,161.68 : 2,982.95 = 1,277.33 : x
  2. Step 2: Convert to fraction form
    2,161.68/2,982.95 = 1,277.33/x
  3. Step 3: Cross multiply
    2,161.68x = 2,982.95 × 1,277.33
  4. Step 4: Simplify right side
    2,161.68x = 3,810,190.22
  5. Step 5: Solve for x
    x = 3,810,190.22/2,161.68
  6. Step 6: Final answer
    x = 1,762.61

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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.