Home / 8,936.39-13,410.70-5,978.21

Finding the Fourth Proportional to 8,936.39, 13,410.70 and 5,978.21

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Solution

The fourth proportional to 8,936.39, 13,410.70 and 5,978.21 is: 8,971.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,936.39 : 13,410.70 = 5,978.21 : x
  2. Step 2: Convert to fraction form
    8,936.39/13,410.70 = 5,978.21/x
  3. Step 3: Cross multiply
    8,936.39x = 13,410.70 × 5,978.21
  4. Step 4: Simplify right side
    8,936.39x = 80,171,898.85
  5. Step 5: Solve for x
    x = 80,171,898.85/8,936.39
  6. Step 6: Final answer
    x = 8,971.39

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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.