Home / 3,918.37-5,407.69-2,150.32

Finding the Fourth Proportional to 3,918.37, 5,407.69 and 2,150.32

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Solution

The fourth proportional to 3,918.37, 5,407.69 and 2,150.32 is: 2,967.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,918.37 : 5,407.69 = 2,150.32 : x
  2. Step 2: Convert to fraction form
    3,918.37/5,407.69 = 2,150.32/x
  3. Step 3: Cross multiply
    3,918.37x = 5,407.69 × 2,150.32
  4. Step 4: Simplify right side
    3,918.37x = 11,628,263.96
  5. Step 5: Solve for x
    x = 11,628,263.96/3,918.37
  6. Step 6: Final answer
    x = 2,967.63

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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.