Home / 4,782.50-7,172.94-1,272.56

Finding the Fourth Proportional to 4,782.50, 7,172.94 and 1,272.56

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Solution

The fourth proportional to 4,782.50, 7,172.94 and 1,272.56 is: 1,908.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,782.50 : 7,172.94 = 1,272.56 : x
  2. Step 2: Convert to fraction form
    4,782.50/7,172.94 = 1,272.56/x
  3. Step 3: Cross multiply
    4,782.50x = 7,172.94 × 1,272.56
  4. Step 4: Simplify right side
    4,782.50x = 9,127,996.53
  5. Step 5: Solve for x
    x = 9,127,996.53/4,782.50
  6. Step 6: Final answer
    x = 1,908.62

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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.