Home / 2,415.26-3,621.39-1,115.06

Finding the Fourth Proportional to 2,415.26, 3,621.39 and 1,115.06

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Solution

The fourth proportional to 2,415.26, 3,621.39 and 1,115.06 is: 1,671.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,415.26 : 3,621.39 = 1,115.06 : x
  2. Step 2: Convert to fraction form
    2,415.26/3,621.39 = 1,115.06/x
  3. Step 3: Cross multiply
    2,415.26x = 3,621.39 × 1,115.06
  4. Step 4: Simplify right side
    2,415.26x = 4,038,067.13
  5. Step 5: Solve for x
    x = 4,038,067.13/2,415.26
  6. Step 6: Final answer
    x = 1,671.90

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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.