Home / 3,783.02-5,221.26-2,189.45

Finding the Fourth Proportional to 3,783.02, 5,221.26 and 2,189.45

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Solution

The fourth proportional to 3,783.02, 5,221.26 and 2,189.45 is: 3,021.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,783.02 : 5,221.26 = 2,189.45 : x
  2. Step 2: Convert to fraction form
    3,783.02/5,221.26 = 2,189.45/x
  3. Step 3: Cross multiply
    3,783.02x = 5,221.26 × 2,189.45
  4. Step 4: Simplify right side
    3,783.02x = 11,431,700.76
  5. Step 5: Solve for x
    x = 11,431,700.76/3,783.02
  6. Step 6: Final answer
    x = 3,021.85

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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.