Home / 8,155.60-12,221.39-3,647.19

Finding the Fourth Proportional to 8,155.60, 12,221.39 and 3,647.19

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Solution

The fourth proportional to 8,155.60, 12,221.39 and 3,647.19 is: 5,465.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,155.60 : 12,221.39 = 3,647.19 : x
  2. Step 2: Convert to fraction form
    8,155.60/12,221.39 = 3,647.19/x
  3. Step 3: Cross multiply
    8,155.60x = 12,221.39 × 3,647.19
  4. Step 4: Simplify right side
    8,155.60x = 44,573,786.34
  5. Step 5: Solve for x
    x = 44,573,786.34/8,155.60
  6. Step 6: Final answer
    x = 5,465.42

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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.