Home / 1,629.57-2,247.35-1,279.65

Finding the Fourth Proportional to 1,629.57, 2,247.35 and 1,279.65

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Solution

The fourth proportional to 1,629.57, 2,247.35 and 1,279.65 is: 1,764.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,629.57 : 2,247.35 = 1,279.65 : x
  2. Step 2: Convert to fraction form
    1,629.57/2,247.35 = 1,279.65/x
  3. Step 3: Cross multiply
    1,629.57x = 2,247.35 × 1,279.65
  4. Step 4: Simplify right side
    1,629.57x = 2,875,803.79
  5. Step 5: Solve for x
    x = 2,875,803.79/1,629.57
  6. Step 6: Final answer
    x = 1,764.77

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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.