Home / 1,629.32-2,247-1,279.40

Finding the Fourth Proportional to 1,629.32, 2,247 and 1,279.40

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Solution

The fourth proportional to 1,629.32, 2,247 and 1,279.40 is: 1,764.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,629.32 : 2,247 = 1,279.40 : x
  2. Step 2: Convert to fraction form
    1,629.32/2,247 = 1,279.40/x
  3. Step 3: Cross multiply
    1,629.32x = 2,247 × 1,279.40
  4. Step 4: Simplify right side
    1,629.32x = 2,874,811.80
  5. Step 5: Solve for x
    x = 2,874,811.80/1,629.32
  6. Step 6: Final answer
    x = 1,764.42

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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.