Home / 2,449.63-3,378.18-1,889.21

Finding the Fourth Proportional to 2,449.63, 3,378.18 and 1,889.21

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Solution

The fourth proportional to 2,449.63, 3,378.18 and 1,889.21 is: 2,605.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,449.63 : 3,378.18 = 1,889.21 : x
  2. Step 2: Convert to fraction form
    2,449.63/3,378.18 = 1,889.21/x
  3. Step 3: Cross multiply
    2,449.63x = 3,378.18 × 1,889.21
  4. Step 4: Simplify right side
    2,449.63x = 6,382,082.65
  5. Step 5: Solve for x
    x = 6,382,082.65/2,449.63
  6. Step 6: Final answer
    x = 2,605.33

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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.