Home / 8,188.32-12,281.79-2,640.21

Finding the Fourth Proportional to 8,188.32, 12,281.79 and 2,640.21

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Solution

The fourth proportional to 8,188.32, 12,281.79 and 2,640.21 is: 3,960.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,188.32 : 12,281.79 = 2,640.21 : x
  2. Step 2: Convert to fraction form
    8,188.32/12,281.79 = 2,640.21/x
  3. Step 3: Cross multiply
    8,188.32x = 12,281.79 × 2,640.21
  4. Step 4: Simplify right side
    8,188.32x = 32,426,504.78
  5. Step 5: Solve for x
    x = 32,426,504.78/8,188.32
  6. Step 6: Final answer
    x = 3,960.09

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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.