Home / 2,119.68-2,918.40-2,004.48

Finding the Fourth Proportional to 2,119.68, 2,918.40 and 2,004.48

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Solution

The fourth proportional to 2,119.68, 2,918.40 and 2,004.48 is: 2,759.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,119.68 : 2,918.40 = 2,004.48 : x
  2. Step 2: Convert to fraction form
    2,119.68/2,918.40 = 2,004.48/x
  3. Step 3: Cross multiply
    2,119.68x = 2,918.40 × 2,004.48
  4. Step 4: Simplify right side
    2,119.68x = 5,849,874.43
  5. Step 5: Solve for x
    x = 5,849,874.43/2,119.68
  6. Step 6: Final answer
    x = 2,759.79

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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.