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Finding the Fourth Proportional to 4,910.07, 7,355.07 and 4,085.70

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Solution

The fourth proportional to 4,910.07, 7,355.07 and 4,085.70 is: 6,120.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,910.07 : 7,355.07 = 4,085.70 : x
  2. Step 2: Convert to fraction form
    4,910.07/7,355.07 = 4,085.70/x
  3. Step 3: Cross multiply
    4,910.07x = 7,355.07 × 4,085.70
  4. Step 4: Simplify right side
    4,910.07x = 30,050,609.50
  5. Step 5: Solve for x
    x = 30,050,609.50/4,910.07
  6. Step 6: Final answer
    x = 6,120.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.