Home / 5,515.09-8,271.61-2,879.75

Finding the Fourth Proportional to 5,515.09, 8,271.61 and 2,879.75

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Solution

The fourth proportional to 5,515.09, 8,271.61 and 2,879.75 is: 4,319.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,515.09 : 8,271.61 = 2,879.75 : x
  2. Step 2: Convert to fraction form
    5,515.09/8,271.61 = 2,879.75/x
  3. Step 3: Cross multiply
    5,515.09x = 8,271.61 × 2,879.75
  4. Step 4: Simplify right side
    5,515.09x = 23,820,182.38
  5. Step 5: Solve for x
    x = 23,820,182.38/5,515.09
  6. Step 6: Final answer
    x = 4,319.09

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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.