Home / 3,783.51-5,221.26-2,105.07

Finding the Fourth Proportional to 3,783.51, 5,221.26 and 2,105.07

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Solution

The fourth proportional to 3,783.51, 5,221.26 and 2,105.07 is: 2,905.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,783.51 : 5,221.26 = 2,105.07 : x
  2. Step 2: Convert to fraction form
    3,783.51/5,221.26 = 2,105.07/x
  3. Step 3: Cross multiply
    3,783.51x = 5,221.26 × 2,105.07
  4. Step 4: Simplify right side
    3,783.51x = 10,991,117.79
  5. Step 5: Solve for x
    x = 10,991,117.79/3,783.51
  6. Step 6: Final answer
    x = 2,905.01

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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.