Home / 5,195.39-7,788.74-2,420.64

Finding the Fourth Proportional to 5,195.39, 7,788.74 and 2,420.64

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Solution

The fourth proportional to 5,195.39, 7,788.74 and 2,420.64 is: 3,628.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,195.39 : 7,788.74 = 2,420.64 : x
  2. Step 2: Convert to fraction form
    5,195.39/7,788.74 = 2,420.64/x
  3. Step 3: Cross multiply
    5,195.39x = 7,788.74 × 2,420.64
  4. Step 4: Simplify right side
    5,195.39x = 18,853,735.59
  5. Step 5: Solve for x
    x = 18,853,735.59/5,195.39
  6. Step 6: Final answer
    x = 3,628.94

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1.5x scale

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.