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Finding the Fourth Proportional to 5,383.79, 7,431.98 and 3,144.81

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Solution

The fourth proportional to 5,383.79, 7,431.98 and 3,144.81 is: 4,341.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,383.79 : 7,431.98 = 3,144.81 : x
  2. Step 2: Convert to fraction form
    5,383.79/7,431.98 = 3,144.81/x
  3. Step 3: Cross multiply
    5,383.79x = 7,431.98 × 3,144.81
  4. Step 4: Simplify right side
    5,383.79x = 23,372,149.30
  5. Step 5: Solve for x
    x = 23,372,149.30/5,383.79
  6. Step 6: Final answer
    x = 4,341.21

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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.