Home / 4,085.45-6,128.87-1,620.30

Finding the Fourth Proportional to 4,085.45, 6,128.87 and 1,620.30

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Solution

The fourth proportional to 4,085.45, 6,128.87 and 1,620.30 is: 2,430.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,085.45 : 6,128.87 = 1,620.30 : x
  2. Step 2: Convert to fraction form
    4,085.45/6,128.87 = 1,620.30/x
  3. Step 3: Cross multiply
    4,085.45x = 6,128.87 × 1,620.30
  4. Step 4: Simplify right side
    4,085.45x = 9,930,622.94
  5. Step 5: Solve for x
    x = 9,930,622.94/4,085.45
  6. Step 6: Final answer
    x = 2,430.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.