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Finding the Fourth Proportional to 4,640.05, 6,401.05 and 3,379.15

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Solution

The fourth proportional to 4,640.05, 6,401.05 and 3,379.15 is: 4,661.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,640.05 : 6,401.05 = 3,379.15 : x
  2. Step 2: Convert to fraction form
    4,640.05/6,401.05 = 3,379.15/x
  3. Step 3: Cross multiply
    4,640.05x = 6,401.05 × 3,379.15
  4. Step 4: Simplify right side
    4,640.05x = 21,630,108.11
  5. Step 5: Solve for x
    x = 21,630,108.11/4,640.05
  6. Step 6: Final answer
    x = 4,661.61

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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.