Home / 4,780.45-7,172.43-1,860.76

Finding the Fourth Proportional to 4,780.45, 7,172.43 and 1,860.76

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Solution

The fourth proportional to 4,780.45, 7,172.43 and 1,860.76 is: 2,791.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,780.45 : 7,172.43 = 1,860.76 : x
  2. Step 2: Convert to fraction form
    4,780.45/7,172.43 = 1,860.76/x
  3. Step 3: Cross multiply
    4,780.45x = 7,172.43 × 1,860.76
  4. Step 4: Simplify right side
    4,780.45x = 13,346,170.85
  5. Step 5: Solve for x
    x = 13,346,170.85/4,780.45
  6. Step 6: Final answer
    x = 2,791.82

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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.