Home / 2,515.82-3,474.21-1,621.13

Finding the Fourth Proportional to 2,515.82, 3,474.21 and 1,621.13

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Solution

The fourth proportional to 2,515.82, 3,474.21 and 1,621.13 is: 2,238.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,515.82 : 3,474.21 = 1,621.13 : x
  2. Step 2: Convert to fraction form
    2,515.82/3,474.21 = 1,621.13/x
  3. Step 3: Cross multiply
    2,515.82x = 3,474.21 × 1,621.13
  4. Step 4: Simplify right side
    2,515.82x = 5,632,146.06
  5. Step 5: Solve for x
    x = 5,632,146.06/2,515.82
  6. Step 6: Final answer
    x = 2,238.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.