Home / 8,122.32-12,166.47-5,185.67

Finding the Fourth Proportional to 8,122.32, 12,166.47 and 5,185.67

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Solution

The fourth proportional to 8,122.32, 12,166.47 and 5,185.67 is: 7,767.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,122.32 : 12,166.47 = 5,185.67 : x
  2. Step 2: Convert to fraction form
    8,122.32/12,166.47 = 5,185.67/x
  3. Step 3: Cross multiply
    8,122.32x = 12,166.47 × 5,185.67
  4. Step 4: Simplify right side
    8,122.32x = 63,091,237.65
  5. Step 5: Solve for x
    x = 63,091,237.65/8,122.32
  6. Step 6: Final answer
    x = 7,767.64

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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.