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Finding the Fourth Proportional to 8,518.43, 11,755.43 and 4,741.51

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Solution

The fourth proportional to 8,518.43, 11,755.43 and 4,741.51 is: 6,543.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,518.43 : 11,755.43 = 4,741.51 : x
  2. Step 2: Convert to fraction form
    8,518.43/11,755.43 = 4,741.51/x
  3. Step 3: Cross multiply
    8,518.43x = 11,755.43 × 4,741.51
  4. Step 4: Simplify right side
    8,518.43x = 55,738,450.50
  5. Step 5: Solve for x
    x = 55,738,450.50/8,518.43
  6. Step 6: Final answer
    x = 6,543.28

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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.