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Finding the Fourth Proportional to 3,571.56, 4,930.12 and 2,392.20

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Solution

The fourth proportional to 3,571.56, 4,930.12 and 2,392.20 is: 3,302.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,571.56 : 4,930.12 = 2,392.20 : x
  2. Step 2: Convert to fraction form
    3,571.56/4,930.12 = 2,392.20/x
  3. Step 3: Cross multiply
    3,571.56x = 4,930.12 × 2,392.20
  4. Step 4: Simplify right side
    3,571.56x = 11,793,833.06
  5. Step 5: Solve for x
    x = 11,793,833.06/3,571.56
  6. Step 6: Final answer
    x = 3,302.15

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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.