Home / 1,621.21-2,427.62-1,180.65

Finding the Fourth Proportional to 1,621.21, 2,427.62 and 1,180.65

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Solution

The fourth proportional to 1,621.21, 2,427.62 and 1,180.65 is: 1,767.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,621.21 : 2,427.62 = 1,180.65 : x
  2. Step 2: Convert to fraction form
    1,621.21/2,427.62 = 1,180.65/x
  3. Step 3: Cross multiply
    1,621.21x = 2,427.62 × 1,180.65
  4. Step 4: Simplify right side
    1,621.21x = 2,866,163.65
  5. Step 5: Solve for x
    x = 2,866,163.65/1,621.21
  6. Step 6: Final answer
    x = 1,767.92

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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.