Home / 7,172.91-9,897.89-4,190.48

Finding the Fourth Proportional to 7,172.91, 9,897.89 and 4,190.48

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Solution

The fourth proportional to 7,172.91, 9,897.89 and 4,190.48 is: 5,782.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,172.91 : 9,897.89 = 4,190.48 : x
  2. Step 2: Convert to fraction form
    7,172.91/9,897.89 = 4,190.48/x
  3. Step 3: Cross multiply
    7,172.91x = 9,897.89 × 4,190.48
  4. Step 4: Simplify right side
    7,172.91x = 41,476,839.65
  5. Step 5: Solve for x
    x = 41,476,839.65/7,172.91
  6. Step 6: Final answer
    x = 5,782.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.