Home / 5,515.97-8,275.33-1,620.38

Finding the Fourth Proportional to 5,515.97, 8,275.33 and 1,620.38

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Solution

The fourth proportional to 5,515.97, 8,275.33 and 1,620.38 is: 2,430.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,515.97 : 8,275.33 = 1,620.38 : x
  2. Step 2: Convert to fraction form
    5,515.97/8,275.33 = 1,620.38/x
  3. Step 3: Cross multiply
    5,515.97x = 8,275.33 × 1,620.38
  4. Step 4: Simplify right side
    5,515.97x = 13,409,137.85
  5. Step 5: Solve for x
    x = 13,409,137.85/5,515.97
  6. Step 6: Final answer
    x = 2,430.97

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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.