Home / 5,611.20-8,400.60-3,424.20

Finding the Fourth Proportional to 5,611.20, 8,400.60 and 3,424.20

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Solution

The fourth proportional to 5,611.20, 8,400.60 and 3,424.20 is: 5,126.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,611.20 : 8,400.60 = 3,424.20 : x
  2. Step 2: Convert to fraction form
    5,611.20/8,400.60 = 3,424.20/x
  3. Step 3: Cross multiply
    5,611.20x = 8,400.60 × 3,424.20
  4. Step 4: Simplify right side
    5,611.20x = 28,765,334.52
  5. Step 5: Solve for x
    x = 28,765,334.52/5,611.20
  6. Step 6: Final answer
    x = 5,126.41

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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.