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Finding the Fourth Proportional to 3,189.53, 4,783.85 and 849.72

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Solution

The fourth proportional to 3,189.53, 4,783.85 and 849.72 is: 1,274.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,189.53 : 4,783.85 = 849.72 : x
  2. Step 2: Convert to fraction form
    3,189.53/4,783.85 = 849.72/x
  3. Step 3: Cross multiply
    3,189.53x = 4,783.85 × 849.72
  4. Step 4: Simplify right side
    3,189.53x = 4,064,933.02
  5. Step 5: Solve for x
    x = 4,064,933.02/3,189.53
  6. Step 6: Final answer
    x = 1,274.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.