Home / 2,109.96-2,911.73-1,226.51

Finding the Fourth Proportional to 2,109.96, 2,911.73 and 1,226.51

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Solution

The fourth proportional to 2,109.96, 2,911.73 and 1,226.51 is: 1,692.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,109.96 : 2,911.73 = 1,226.51 : x
  2. Step 2: Convert to fraction form
    2,109.96/2,911.73 = 1,226.51/x
  3. Step 3: Cross multiply
    2,109.96x = 2,911.73 × 1,226.51
  4. Step 4: Simplify right side
    2,109.96x = 3,571,245.27
  5. Step 5: Solve for x
    x = 3,571,245.27/2,109.96
  6. Step 6: Final answer
    x = 1,692.57

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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.