Home / 2,109.21-2,910.42-1,270.26

Finding the Fourth Proportional to 2,109.21, 2,910.42 and 1,270.26

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Solution

The fourth proportional to 2,109.21, 2,910.42 and 1,270.26 is: 1,752.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,109.21 : 2,910.42 = 1,270.26 : x
  2. Step 2: Convert to fraction form
    2,109.21/2,910.42 = 1,270.26/x
  3. Step 3: Cross multiply
    2,109.21x = 2,910.42 × 1,270.26
  4. Step 4: Simplify right side
    2,109.21x = 3,696,990.11
  5. Step 5: Solve for x
    x = 3,696,990.11/2,109.21
  6. Step 6: Final answer
    x = 1,752.78

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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.