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Finding the Fourth Proportional to 3,878.28, 5,817.33 and 956.58

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Solution

The fourth proportional to 3,878.28, 5,817.33 and 956.58 is: 1,434.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,878.28 : 5,817.33 = 956.58 : x
  2. Step 2: Convert to fraction form
    3,878.28/5,817.33 = 956.58/x
  3. Step 3: Cross multiply
    3,878.28x = 5,817.33 × 956.58
  4. Step 4: Simplify right side
    3,878.28x = 5,564,741.53
  5. Step 5: Solve for x
    x = 5,564,741.53/3,878.28
  6. Step 6: Final answer
    x = 1,434.85

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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.