Home / 3,170.40-4,750.20-2,619.60

Finding the Fourth Proportional to 3,170.40, 4,750.20 and 2,619.60

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Solution

The fourth proportional to 3,170.40, 4,750.20 and 2,619.60 is: 3,924.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,170.40 : 4,750.20 = 2,619.60 : x
  2. Step 2: Convert to fraction form
    3,170.40/4,750.20 = 2,619.60/x
  3. Step 3: Cross multiply
    3,170.40x = 4,750.20 × 2,619.60
  4. Step 4: Simplify right side
    3,170.40x = 12,443,623.92
  5. Step 5: Solve for x
    x = 12,443,623.92/3,170.40
  6. Step 6: Final answer
    x = 3,924.94

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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.