Home / 4,783.80-7,175.64-1,321.02

Finding the Fourth Proportional to 4,783.80, 7,175.64 and 1,321.02

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Solution

The fourth proportional to 4,783.80, 7,175.64 and 1,321.02 is: 1,981.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,783.80 : 7,175.64 = 1,321.02 : x
  2. Step 2: Convert to fraction form
    4,783.80/7,175.64 = 1,321.02/x
  3. Step 3: Cross multiply
    4,783.80x = 7,175.64 × 1,321.02
  4. Step 4: Simplify right side
    4,783.80x = 9,479,163.95
  5. Step 5: Solve for x
    x = 9,479,163.95/4,783.80
  6. Step 6: Final answer
    x = 1,981.51

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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.