Home / 2,591.21-3,880.62-1,419.45

Finding the Fourth Proportional to 2,591.21, 3,880.62 and 1,419.45

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Solution

The fourth proportional to 2,591.21, 3,880.62 and 1,419.45 is: 2,125.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,591.21 : 3,880.62 = 1,419.45 : x
  2. Step 2: Convert to fraction form
    2,591.21/3,880.62 = 1,419.45/x
  3. Step 3: Cross multiply
    2,591.21x = 3,880.62 × 1,419.45
  4. Step 4: Simplify right side
    2,591.21x = 5,508,346.06
  5. Step 5: Solve for x
    x = 5,508,346.06/2,591.21
  6. Step 6: Final answer
    x = 2,125.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.