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Finding the Fourth Proportional to 3,956.58, 5,931.56 and 1,490.04

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Solution

The fourth proportional to 3,956.58, 5,931.56 and 1,490.04 is: 2,233.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,956.58 : 5,931.56 = 1,490.04 : x
  2. Step 2: Convert to fraction form
    3,956.58/5,931.56 = 1,490.04/x
  3. Step 3: Cross multiply
    3,956.58x = 5,931.56 × 1,490.04
  4. Step 4: Simplify right side
    3,956.58x = 8,838,261.66
  5. Step 5: Solve for x
    x = 8,838,261.66/3,956.58
  6. Step 6: Final answer
    x = 2,233.81

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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.