Home / 4,400.40-6,600.60-1,280.40

Finding the Fourth Proportional to 4,400.40, 6,600.60 and 1,280.40

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Solution

The fourth proportional to 4,400.40, 6,600.60 and 1,280.40 is: 1,920.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,400.40 : 6,600.60 = 1,280.40 : x
  2. Step 2: Convert to fraction form
    4,400.40/6,600.60 = 1,280.40/x
  3. Step 3: Cross multiply
    4,400.40x = 6,600.60 × 1,280.40
  4. Step 4: Simplify right side
    4,400.40x = 8,451,408.24
  5. Step 5: Solve for x
    x = 8,451,408.24/4,400.40
  6. Step 6: Final answer
    x = 1,920.60

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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.