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Finding the Fourth Proportional to 3,892.56, 5,372.37 and 2,321.58

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Solution

The fourth proportional to 3,892.56, 5,372.37 and 2,321.58 is: 3,204.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,892.56 : 5,372.37 = 2,321.58 : x
  2. Step 2: Convert to fraction form
    3,892.56/5,372.37 = 2,321.58/x
  3. Step 3: Cross multiply
    3,892.56x = 5,372.37 × 2,321.58
  4. Step 4: Simplify right side
    3,892.56x = 12,472,386.74
  5. Step 5: Solve for x
    x = 12,472,386.74/3,892.56
  6. Step 6: Final answer
    x = 3,204.16

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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.