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Finding the Fourth Proportional to 8,991.93, 12,409.07 and 5,012.94

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Solution

The fourth proportional to 8,991.93, 12,409.07 and 5,012.94 is: 6,917.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,991.93 : 12,409.07 = 5,012.94 : x
  2. Step 2: Convert to fraction form
    8,991.93/12,409.07 = 5,012.94/x
  3. Step 3: Cross multiply
    8,991.93x = 12,409.07 × 5,012.94
  4. Step 4: Simplify right side
    8,991.93x = 62,205,923.37
  5. Step 5: Solve for x
    x = 62,205,923.37/8,991.93
  6. Step 6: Final answer
    x = 6,917.97

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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.