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Finding the Fourth Proportional to 6,463.39, 8,921.81 and 4,874.58

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Solution

The fourth proportional to 6,463.39, 8,921.81 and 4,874.58 is: 6,728.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,463.39 : 8,921.81 = 4,874.58 : x
  2. Step 2: Convert to fraction form
    6,463.39/8,921.81 = 4,874.58/x
  3. Step 3: Cross multiply
    6,463.39x = 8,921.81 × 4,874.58
  4. Step 4: Simplify right side
    6,463.39x = 43,490,076.59
  5. Step 5: Solve for x
    x = 43,490,076.59/6,463.39
  6. Step 6: Final answer
    x = 6,728.68

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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.