Home / 2,419.68-3,621.52-2,081.76

Finding the Fourth Proportional to 2,419.68, 3,621.52 and 2,081.76

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Solution

The fourth proportional to 2,419.68, 3,621.52 and 2,081.76 is: 3,115.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,419.68 : 3,621.52 = 2,081.76 : x
  2. Step 2: Convert to fraction form
    2,419.68/3,621.52 = 2,081.76/x
  3. Step 3: Cross multiply
    2,419.68x = 3,621.52 × 2,081.76
  4. Step 4: Simplify right side
    2,419.68x = 7,539,135.48
  5. Step 5: Solve for x
    x = 7,539,135.48/2,419.68
  6. Step 6: Final answer
    x = 3,115.76

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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.