Home / 2,107.89-3,154.98-1,119.30

Finding the Fourth Proportional to 2,107.89, 3,154.98 and 1,119.30

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Solution

The fourth proportional to 2,107.89, 3,154.98 and 1,119.30 is: 1,675.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,107.89 : 3,154.98 = 1,119.30 : x
  2. Step 2: Convert to fraction form
    2,107.89/3,154.98 = 1,119.30/x
  3. Step 3: Cross multiply
    2,107.89x = 3,154.98 × 1,119.30
  4. Step 4: Simplify right side
    2,107.89x = 3,531,363.13
  5. Step 5: Solve for x
    x = 3,531,363.13/2,107.89
  6. Step 6: Final answer
    x = 1,675.31

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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.