Home / 3,419.88-4,719.96-1,928.40

Finding the Fourth Proportional to 3,419.88, 4,719.96 and 1,928.40

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Solution

The fourth proportional to 3,419.88, 4,719.96 and 1,928.40 is: 2,661.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,419.88 : 4,719.96 = 1,928.40 : x
  2. Step 2: Convert to fraction form
    3,419.88/4,719.96 = 1,928.40/x
  3. Step 3: Cross multiply
    3,419.88x = 4,719.96 × 1,928.40
  4. Step 4: Simplify right side
    3,419.88x = 9,101,970.86
  5. Step 5: Solve for x
    x = 9,101,970.86/3,419.88
  6. Step 6: Final answer
    x = 2,661.49

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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.