Home / 3,395.65-4,685.36-2,185.39

Finding the Fourth Proportional to 3,395.65, 4,685.36 and 2,185.39

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Solution

The fourth proportional to 3,395.65, 4,685.36 and 2,185.39 is: 3,015.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,395.65 : 4,685.36 = 2,185.39 : x
  2. Step 2: Convert to fraction form
    3,395.65/4,685.36 = 2,185.39/x
  3. Step 3: Cross multiply
    3,395.65x = 4,685.36 × 2,185.39
  4. Step 4: Simplify right side
    3,395.65x = 10,239,338.89
  5. Step 5: Solve for x
    x = 10,239,338.89/3,395.65
  6. Step 6: Final answer
    x = 3,015.43

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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.