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Finding the Fourth Proportional to 6,454.78, 8,907.04 and 3,621.77

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Solution

The fourth proportional to 6,454.78, 8,907.04 and 3,621.77 is: 4,997.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,454.78 : 8,907.04 = 3,621.77 : x
  2. Step 2: Convert to fraction form
    6,454.78/8,907.04 = 3,621.77/x
  3. Step 3: Cross multiply
    6,454.78x = 8,907.04 × 3,621.77
  4. Step 4: Simplify right side
    6,454.78x = 32,259,243.65
  5. Step 5: Solve for x
    x = 32,259,243.65/6,454.78
  6. Step 6: Final answer
    x = 4,997.73

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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.