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Finding the Fourth Proportional to 8,674.98, 11,971.04 and 5,139.33

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Solution

The fourth proportional to 8,674.98, 11,971.04 and 5,139.33 is: 7,092.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,674.98 : 11,971.04 = 5,139.33 : x
  2. Step 2: Convert to fraction form
    8,674.98/11,971.04 = 5,139.33/x
  3. Step 3: Cross multiply
    8,674.98x = 11,971.04 × 5,139.33
  4. Step 4: Simplify right side
    8,674.98x = 61,523,099.31
  5. Step 5: Solve for x
    x = 61,523,099.31/8,674.98
  6. Step 6: Final answer
    x = 7,092.02

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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.