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Finding the Fourth Proportional to 6,279.35, 8,658.38 and 4,007.63

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Solution

The fourth proportional to 6,279.35, 8,658.38 and 4,007.63 is: 5,525.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,279.35 : 8,658.38 = 4,007.63 : x
  2. Step 2: Convert to fraction form
    6,279.35/8,658.38 = 4,007.63/x
  3. Step 3: Cross multiply
    6,279.35x = 8,658.38 × 4,007.63
  4. Step 4: Simplify right side
    6,279.35x = 34,699,520.11
  5. Step 5: Solve for x
    x = 34,699,520.11/6,279.35
  6. Step 6: Final answer
    x = 5,525.98

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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.