Home / 3,112.21-4,659.20-3,087.61

Finding the Fourth Proportional to 3,112.21, 4,659.20 and 3,087.61

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Solution

The fourth proportional to 3,112.21, 4,659.20 and 3,087.61 is: 4,622.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,112.21 : 4,659.20 = 3,087.61 : x
  2. Step 2: Convert to fraction form
    3,112.21/4,659.20 = 3,087.61/x
  3. Step 3: Cross multiply
    3,112.21x = 4,659.20 × 3,087.61
  4. Step 4: Simplify right side
    3,112.21x = 14,385,792.51
  5. Step 5: Solve for x
    x = 14,385,792.51/3,112.21
  6. Step 6: Final answer
    x = 4,622.37

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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.