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Finding the Fourth Proportional to 8,505.58, 11,734.99 and 5,147.32

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Solution

The fourth proportional to 8,505.58, 11,734.99 and 5,147.32 is: 7,101.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,505.58 : 11,734.99 = 5,147.32 : x
  2. Step 2: Convert to fraction form
    8,505.58/11,734.99 = 5,147.32/x
  3. Step 3: Cross multiply
    8,505.58x = 11,734.99 × 5,147.32
  4. Step 4: Simplify right side
    8,505.58x = 60,403,706.52
  5. Step 5: Solve for x
    x = 60,403,706.52/8,505.58
  6. Step 6: Final answer
    x = 7,101.66

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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.