Home / 6,936.80-10,405.20-6,171.35

Finding the Fourth Proportional to 6,936.80, 10,405.20 and 6,171.35

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Solution

The fourth proportional to 6,936.80, 10,405.20 and 6,171.35 is: 9,257.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,936.80 : 10,405.20 = 6,171.35 : x
  2. Step 2: Convert to fraction form
    6,936.80/10,405.20 = 6,171.35/x
  3. Step 3: Cross multiply
    6,936.80x = 10,405.20 × 6,171.35
  4. Step 4: Simplify right side
    6,936.80x = 64,214,131.02
  5. Step 5: Solve for x
    x = 64,214,131.02/6,936.80
  6. Step 6: Final answer
    x = 9,257.03

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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.