Home / 7,851.05-11,780.67-3,172.22

Finding the Fourth Proportional to 7,851.05, 11,780.67 and 3,172.22

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Solution

The fourth proportional to 7,851.05, 11,780.67 and 3,172.22 is: 4,759.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,851.05 : 11,780.67 = 3,172.22 : x
  2. Step 2: Convert to fraction form
    7,851.05/11,780.67 = 3,172.22/x
  3. Step 3: Cross multiply
    7,851.05x = 11,780.67 × 3,172.22
  4. Step 4: Simplify right side
    7,851.05x = 37,370,876.99
  5. Step 5: Solve for x
    x = 37,370,876.99/7,851.05
  6. Step 6: Final answer
    x = 4,759.98

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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.