Home / 2,107.05-3,159.05-1,119.21

Finding the Fourth Proportional to 2,107.05, 3,159.05 and 1,119.21

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Solution

The fourth proportional to 2,107.05, 3,159.05 and 1,119.21 is: 1,678.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,107.05 : 3,159.05 = 1,119.21 : x
  2. Step 2: Convert to fraction form
    2,107.05/3,159.05 = 1,119.21/x
  3. Step 3: Cross multiply
    2,107.05x = 3,159.05 × 1,119.21
  4. Step 4: Simplify right side
    2,107.05x = 3,535,634.75
  5. Step 5: Solve for x
    x = 3,535,634.75/2,107.05
  6. Step 6: Final answer
    x = 1,678.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.