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Finding the Fourth Proportional to 4,994.25, 6,921.20 and 4,923.78

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Solution

The fourth proportional to 4,994.25, 6,921.20 and 4,923.78 is: 6,823.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,994.25 : 6,921.20 = 4,923.78 : x
  2. Step 2: Convert to fraction form
    4,994.25/6,921.20 = 4,923.78/x
  3. Step 3: Cross multiply
    4,994.25x = 6,921.20 × 4,923.78
  4. Step 4: Simplify right side
    4,994.25x = 34,078,406.91
  5. Step 5: Solve for x
    x = 34,078,406.91/4,994.25
  6. Step 6: Final answer
    x = 6,823.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.