Home / 3,185.14-4,395.69-2,121.07

Finding the Fourth Proportional to 3,185.14, 4,395.69 and 2,121.07

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Solution

The fourth proportional to 3,185.14, 4,395.69 and 2,121.07 is: 2,927.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,185.14 : 4,395.69 = 2,121.07 : x
  2. Step 2: Convert to fraction form
    3,185.14/4,395.69 = 2,121.07/x
  3. Step 3: Cross multiply
    3,185.14x = 4,395.69 × 2,121.07
  4. Step 4: Simplify right side
    3,185.14x = 9,323,566.19
  5. Step 5: Solve for x
    x = 9,323,566.19/3,185.14
  6. Step 6: Final answer
    x = 2,927.21

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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.