Home / 4,782.09-7,172.68-1,272.18

Finding the Fourth Proportional to 4,782.09, 7,172.68 and 1,272.18

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Solution

The fourth proportional to 4,782.09, 7,172.68 and 1,272.18 is: 1,908.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,782.09 : 7,172.68 = 1,272.18 : x
  2. Step 2: Convert to fraction form
    4,782.09/7,172.68 = 1,272.18/x
  3. Step 3: Cross multiply
    4,782.09x = 7,172.68 × 1,272.18
  4. Step 4: Simplify right side
    4,782.09x = 9,124,940.04
  5. Step 5: Solve for x
    x = 9,124,940.04/4,782.09
  6. Step 6: Final answer
    x = 1,908.15

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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.