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Finding the Fourth Proportional to 6,479.70, 8,944.89 and 5,040.81

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Solution

The fourth proportional to 6,479.70, 8,944.89 and 5,040.81 is: 6,958.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,479.70 : 8,944.89 = 5,040.81 : x
  2. Step 2: Convert to fraction form
    6,479.70/8,944.89 = 5,040.81/x
  3. Step 3: Cross multiply
    6,479.70x = 8,944.89 × 5,040.81
  4. Step 4: Simplify right side
    6,479.70x = 45,089,490.96
  5. Step 5: Solve for x
    x = 45,089,490.96/6,479.70
  6. Step 6: Final answer
    x = 6,958.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.