Home / 3,089.20-4,632.16-2,115.60

Finding the Fourth Proportional to 3,089.20, 4,632.16 and 2,115.60

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Solution

The fourth proportional to 3,089.20, 4,632.16 and 2,115.60 is: 3,172.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,089.20 : 4,632.16 = 2,115.60 : x
  2. Step 2: Convert to fraction form
    3,089.20/4,632.16 = 2,115.60/x
  3. Step 3: Cross multiply
    3,089.20x = 4,632.16 × 2,115.60
  4. Step 4: Simplify right side
    3,089.20x = 9,799,797.70
  5. Step 5: Solve for x
    x = 9,799,797.70/3,089.20
  6. Step 6: Final answer
    x = 3,172.28

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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.