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Finding the Fourth Proportional to 7,883.89, 10,879.35 and 4,899.66

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Solution

The fourth proportional to 7,883.89, 10,879.35 and 4,899.66 is: 6,761.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,883.89 : 10,879.35 = 4,899.66 : x
  2. Step 2: Convert to fraction form
    7,883.89/10,879.35 = 4,899.66/x
  3. Step 3: Cross multiply
    7,883.89x = 10,879.35 × 4,899.66
  4. Step 4: Simplify right side
    7,883.89x = 53,305,084.41
  5. Step 5: Solve for x
    x = 53,305,084.41/7,883.89
  6. Step 6: Final answer
    x = 6,761.27

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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.