Home / 3,783.06-5,220.45-2,189.63

Finding the Fourth Proportional to 3,783.06, 5,220.45 and 2,189.63

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Solution

The fourth proportional to 3,783.06, 5,220.45 and 2,189.63 is: 3,021.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,783.06 : 5,220.45 = 2,189.63 : x
  2. Step 2: Convert to fraction form
    3,783.06/5,220.45 = 2,189.63/x
  3. Step 3: Cross multiply
    3,783.06x = 5,220.45 × 2,189.63
  4. Step 4: Simplify right side
    3,783.06x = 11,430,827.83
  5. Step 5: Solve for x
    x = 11,430,827.83/3,783.06
  6. Step 6: Final answer
    x = 3,021.58

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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.