Home / 8,137.32-12,188.94-5,200.68

Finding the Fourth Proportional to 8,137.32, 12,188.94 and 5,200.68

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Solution

The fourth proportional to 8,137.32, 12,188.94 and 5,200.68 is: 7,790.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,137.32 : 12,188.94 = 5,200.68 : x
  2. Step 2: Convert to fraction form
    8,137.32/12,188.94 = 5,200.68/x
  3. Step 3: Cross multiply
    8,137.32x = 12,188.94 × 5,200.68
  4. Step 4: Simplify right side
    8,137.32x = 63,390,776.48
  5. Step 5: Solve for x
    x = 63,390,776.48/8,137.32
  6. Step 6: Final answer
    x = 7,790.13

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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.