Home / 8,150.40-12,225.60-3,469.20

Finding the Fourth Proportional to 8,150.40, 12,225.60 and 3,469.20

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Solution

The fourth proportional to 8,150.40, 12,225.60 and 3,469.20 is: 5,203.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,150.40 : 12,225.60 = 3,469.20 : x
  2. Step 2: Convert to fraction form
    8,150.40/12,225.60 = 3,469.20/x
  3. Step 3: Cross multiply
    8,150.40x = 12,225.60 × 3,469.20
  4. Step 4: Simplify right side
    8,150.40x = 42,413,051.52
  5. Step 5: Solve for x
    x = 42,413,051.52/8,150.40
  6. Step 6: Final answer
    x = 5,203.80

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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.