Home / 8,117.75-12,176.67-2,645.75

Finding the Fourth Proportional to 8,117.75, 12,176.67 and 2,645.75

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Solution

The fourth proportional to 8,117.75, 12,176.67 and 2,645.75 is: 3,968.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,117.75 : 12,176.67 = 2,645.75 : x
  2. Step 2: Convert to fraction form
    8,117.75/12,176.67 = 2,645.75/x
  3. Step 3: Cross multiply
    8,117.75x = 12,176.67 × 2,645.75
  4. Step 4: Simplify right side
    8,117.75x = 32,216,424.65
  5. Step 5: Solve for x
    x = 32,216,424.65/8,117.75
  6. Step 6: Final answer
    x = 3,968.64

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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.