Home / 3,274.40-4,911.60-1,812.80

Finding the Fourth Proportional to 3,274.40, 4,911.60 and 1,812.80

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Solution

The fourth proportional to 3,274.40, 4,911.60 and 1,812.80 is: 2,719.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,274.40 : 4,911.60 = 1,812.80 : x
  2. Step 2: Convert to fraction form
    3,274.40/4,911.60 = 1,812.80/x
  3. Step 3: Cross multiply
    3,274.40x = 4,911.60 × 1,812.80
  4. Step 4: Simplify right side
    3,274.40x = 8,903,748.48
  5. Step 5: Solve for x
    x = 8,903,748.48/3,274.40
  6. Step 6: Final answer
    x = 2,719.20

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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.