Home / 9,178.21-12,669.81-6,198.09

Finding the Fourth Proportional to 9,178.21, 12,669.81 and 6,198.09

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Solution

The fourth proportional to 9,178.21, 12,669.81 and 6,198.09 is: 8,555.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,178.21 : 12,669.81 = 6,198.09 : x
  2. Step 2: Convert to fraction form
    9,178.21/12,669.81 = 6,198.09/x
  3. Step 3: Cross multiply
    9,178.21x = 12,669.81 × 6,198.09
  4. Step 4: Simplify right side
    9,178.21x = 78,528,622.66
  5. Step 5: Solve for x
    x = 78,528,622.66/9,178.21
  6. Step 6: Final answer
    x = 8,555.98

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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.