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Finding the Fourth Proportional to 4,951.94, 7,431.52 and 3,989.66

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Solution

The fourth proportional to 4,951.94, 7,431.52 and 3,989.66 is: 5,987.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,951.94 : 7,431.52 = 3,989.66 : x
  2. Step 2: Convert to fraction form
    4,951.94/7,431.52 = 3,989.66/x
  3. Step 3: Cross multiply
    4,951.94x = 7,431.52 × 3,989.66
  4. Step 4: Simplify right side
    4,951.94x = 29,649,238.08
  5. Step 5: Solve for x
    x = 29,649,238.08/4,951.94
  6. Step 6: Final answer
    x = 5,987.40

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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.