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Finding the Fourth Proportional to 7,755.44, 10,702.46 and 4,218.67

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Solution

The fourth proportional to 7,755.44, 10,702.46 and 4,218.67 is: 5,821.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,755.44 : 10,702.46 = 4,218.67 : x
  2. Step 2: Convert to fraction form
    7,755.44/10,702.46 = 4,218.67/x
  3. Step 3: Cross multiply
    7,755.44x = 10,702.46 × 4,218.67
  4. Step 4: Simplify right side
    7,755.44x = 45,150,130.72
  5. Step 5: Solve for x
    x = 45,150,130.72/7,755.44
  6. Step 6: Final answer
    x = 5,821.73

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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.