Home / 2,628.30-3,627-1,580.70

Finding the Fourth Proportional to 2,628.30, 3,627 and 1,580.70

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Solution

The fourth proportional to 2,628.30, 3,627 and 1,580.70 is: 2,181.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,628.30 : 3,627 = 1,580.70 : x
  2. Step 2: Convert to fraction form
    2,628.30/3,627 = 1,580.70/x
  3. Step 3: Cross multiply
    2,628.30x = 3,627 × 1,580.70
  4. Step 4: Simplify right side
    2,628.30x = 5,733,198.90
  5. Step 5: Solve for x
    x = 5,733,198.90/2,628.30
  6. Step 6: Final answer
    x = 2,181.33

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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.