Home / 3,469.20-5,200.64-1,276.40

Finding the Fourth Proportional to 3,469.20, 5,200.64 and 1,276.40

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Solution

The fourth proportional to 3,469.20, 5,200.64 and 1,276.40 is: 1,913.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,469.20 : 5,200.64 = 1,276.40 : x
  2. Step 2: Convert to fraction form
    3,469.20/5,200.64 = 1,276.40/x
  3. Step 3: Cross multiply
    3,469.20x = 5,200.64 × 1,276.40
  4. Step 4: Simplify right side
    3,469.20x = 6,638,096.90
  5. Step 5: Solve for x
    x = 6,638,096.90/3,469.20
  6. Step 6: Final answer
    x = 1,913.44

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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.