Home / 8,645.39-12,968.34-3,380.19

Finding the Fourth Proportional to 8,645.39, 12,968.34 and 3,380.19

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Solution

The fourth proportional to 8,645.39, 12,968.34 and 3,380.19 is: 5,070.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,645.39 : 12,968.34 = 3,380.19 : x
  2. Step 2: Convert to fraction form
    8,645.39/12,968.34 = 3,380.19/x
  3. Step 3: Cross multiply
    8,645.39x = 12,968.34 × 3,380.19
  4. Step 4: Simplify right side
    8,645.39x = 43,835,453.18
  5. Step 5: Solve for x
    x = 43,835,453.18/8,645.39
  6. Step 6: Final answer
    x = 5,070.38

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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.