Home / 8,075.20-12,105.60-4,784.80

Finding the Fourth Proportional to 8,075.20, 12,105.60 and 4,784.80

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Solution

The fourth proportional to 8,075.20, 12,105.60 and 4,784.80 is: 7,172.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,075.20 : 12,105.60 = 4,784.80 : x
  2. Step 2: Convert to fraction form
    8,075.20/12,105.60 = 4,784.80/x
  3. Step 3: Cross multiply
    8,075.20x = 12,105.60 × 4,784.80
  4. Step 4: Simplify right side
    8,075.20x = 57,922,874.88
  5. Step 5: Solve for x
    x = 57,922,874.88/8,075.20
  6. Step 6: Final answer
    x = 7,172.93

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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.