Home / 8,645.39-12,968.30-3,099.12

Finding the Fourth Proportional to 8,645.39, 12,968.30 and 3,099.12

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Solution

The fourth proportional to 8,645.39, 12,968.30 and 3,099.12 is: 4,648.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,645.39 : 12,968.30 = 3,099.12 : x
  2. Step 2: Convert to fraction form
    8,645.39/12,968.30 = 3,099.12/x
  3. Step 3: Cross multiply
    8,645.39x = 12,968.30 × 3,099.12
  4. Step 4: Simplify right side
    8,645.39x = 40,190,317.90
  5. Step 5: Solve for x
    x = 40,190,317.90/8,645.39
  6. Step 6: Final answer
    x = 4,648.76

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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.