Home / 5,419.60-8,122.74-3,081.56

Finding the Fourth Proportional to 5,419.60, 8,122.74 and 3,081.56

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Solution

The fourth proportional to 5,419.60, 8,122.74 and 3,081.56 is: 4,618.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,419.60 : 8,122.74 = 3,081.56 : x
  2. Step 2: Convert to fraction form
    5,419.60/8,122.74 = 3,081.56/x
  3. Step 3: Cross multiply
    5,419.60x = 8,122.74 × 3,081.56
  4. Step 4: Simplify right side
    5,419.60x = 25,030,730.98
  5. Step 5: Solve for x
    x = 25,030,730.98/5,419.60
  6. Step 6: Final answer
    x = 4,618.56

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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.