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Finding the Fourth Proportional to 3,931.64, 5,892.04 and 2,892.20

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Solution

The fourth proportional to 3,931.64, 5,892.04 and 2,892.20 is: 4,334.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,931.64 : 5,892.04 = 2,892.20 : x
  2. Step 2: Convert to fraction form
    3,931.64/5,892.04 = 2,892.20/x
  3. Step 3: Cross multiply
    3,931.64x = 5,892.04 × 2,892.20
  4. Step 4: Simplify right side
    3,931.64x = 17,040,958.09
  5. Step 5: Solve for x
    x = 17,040,958.09/3,931.64
  6. Step 6: Final answer
    x = 4,334.31

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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.