Home / 3,378.14-4,660.37-2,118.32

Finding the Fourth Proportional to 3,378.14, 4,660.37 and 2,118.32

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Solution

The fourth proportional to 3,378.14, 4,660.37 and 2,118.32 is: 2,922.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,378.14 : 4,660.37 = 2,118.32 : x
  2. Step 2: Convert to fraction form
    3,378.14/4,660.37 = 2,118.32/x
  3. Step 3: Cross multiply
    3,378.14x = 4,660.37 × 2,118.32
  4. Step 4: Simplify right side
    3,378.14x = 9,872,146.51
  5. Step 5: Solve for x
    x = 9,872,146.51/3,378.14
  6. Step 6: Final answer
    x = 2,922.36

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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.