Home / 8,091.21-12,136.80-2,545.05

Finding the Fourth Proportional to 8,091.21, 12,136.80 and 2,545.05

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Solution

The fourth proportional to 8,091.21, 12,136.80 and 2,545.05 is: 3,817.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,091.21 : 12,136.80 = 2,545.05 : x
  2. Step 2: Convert to fraction form
    8,091.21/12,136.80 = 2,545.05/x
  3. Step 3: Cross multiply
    8,091.21x = 12,136.80 × 2,545.05
  4. Step 4: Simplify right side
    8,091.21x = 30,888,762.84
  5. Step 5: Solve for x
    x = 30,888,762.84/8,091.21
  6. Step 6: Final answer
    x = 3,817.57

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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.