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Finding the Fourth Proportional to 3,951.01, 5,926.37 and 989.45

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Solution

The fourth proportional to 3,951.01, 5,926.37 and 989.45 is: 1,484.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,951.01 : 5,926.37 = 989.45 : x
  2. Step 2: Convert to fraction form
    3,951.01/5,926.37 = 989.45/x
  3. Step 3: Cross multiply
    3,951.01x = 5,926.37 × 989.45
  4. Step 4: Simplify right side
    3,951.01x = 5,863,834.44
  5. Step 5: Solve for x
    x = 5,863,834.44/3,951.01
  6. Step 6: Final answer
    x = 1,484.14

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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.