Home / 2,628.12-3,623.58-2,128.92

Finding the Fourth Proportional to 2,628.12, 3,623.58 and 2,128.92

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Solution

The fourth proportional to 2,628.12, 3,623.58 and 2,128.92 is: 2,935.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,628.12 : 3,623.58 = 2,128.92 : x
  2. Step 2: Convert to fraction form
    2,628.12/3,623.58 = 2,128.92/x
  3. Step 3: Cross multiply
    2,628.12x = 3,623.58 × 2,128.92
  4. Step 4: Simplify right side
    2,628.12x = 7,714,311.93
  5. Step 5: Solve for x
    x = 7,714,311.93/2,628.12
  6. Step 6: Final answer
    x = 2,935.30

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Double scale
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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.