Home / 2,279.16-3,145.38-1,718.64

Finding the Fourth Proportional to 2,279.16, 3,145.38 and 1,718.64

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Solution

The fourth proportional to 2,279.16, 3,145.38 and 1,718.64 is: 2,371.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,279.16 : 3,145.38 = 1,718.64 : x
  2. Step 2: Convert to fraction form
    2,279.16/3,145.38 = 1,718.64/x
  3. Step 3: Cross multiply
    2,279.16x = 3,145.38 × 1,718.64
  4. Step 4: Simplify right side
    2,279.16x = 5,405,775.88
  5. Step 5: Solve for x
    x = 5,405,775.88/2,279.16
  6. Step 6: Final answer
    x = 2,371.83

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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.