Home / 8,678.07-13,006.67-3,991.62

Finding the Fourth Proportional to 8,678.07, 13,006.67 and 3,991.62

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Solution

The fourth proportional to 8,678.07, 13,006.67 and 3,991.62 is: 5,982.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,678.07 : 13,006.67 = 3,991.62 : x
  2. Step 2: Convert to fraction form
    8,678.07/13,006.67 = 3,991.62/x
  3. Step 3: Cross multiply
    8,678.07x = 13,006.67 × 3,991.62
  4. Step 4: Simplify right side
    8,678.07x = 51,917,679.12
  5. Step 5: Solve for x
    x = 51,917,679.12/8,678.07
  6. Step 6: Final answer
    x = 5,982.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.