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Finding the Fourth Proportional to 6,464.70, 8,921.05 and 3,951.02

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Solution

The fourth proportional to 6,464.70, 8,921.05 and 3,951.02 is: 5,452.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,464.70 : 8,921.05 = 3,951.02 : x
  2. Step 2: Convert to fraction form
    6,464.70/8,921.05 = 3,951.02/x
  3. Step 3: Cross multiply
    6,464.70x = 8,921.05 × 3,951.02
  4. Step 4: Simplify right side
    6,464.70x = 35,247,259.40
  5. Step 5: Solve for x
    x = 35,247,259.40/6,464.70
  6. Step 6: Final answer
    x = 5,452.27

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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.