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Finding the Fourth Proportional to 6,443.70, 8,879.85 and 4,577.46

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Solution

The fourth proportional to 6,443.70, 8,879.85 and 4,577.46 is: 6,308.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,443.70 : 8,879.85 = 4,577.46 : x
  2. Step 2: Convert to fraction form
    6,443.70/8,879.85 = 4,577.46/x
  3. Step 3: Cross multiply
    6,443.70x = 8,879.85 × 4,577.46
  4. Step 4: Simplify right side
    6,443.70x = 40,647,113.78
  5. Step 5: Solve for x
    x = 40,647,113.78/6,443.70
  6. Step 6: Final answer
    x = 6,308.04

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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.