Home / 8,153.26-12,210.73-3,980.20

Finding the Fourth Proportional to 8,153.26, 12,210.73 and 3,980.20

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Solution

The fourth proportional to 8,153.26, 12,210.73 and 3,980.20 is: 5,960.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,153.26 : 12,210.73 = 3,980.20 : x
  2. Step 2: Convert to fraction form
    8,153.26/12,210.73 = 3,980.20/x
  3. Step 3: Cross multiply
    8,153.26x = 12,210.73 × 3,980.20
  4. Step 4: Simplify right side
    8,153.26x = 48,601,147.55
  5. Step 5: Solve for x
    x = 48,601,147.55/8,153.26
  6. Step 6: Final answer
    x = 5,960.95

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Half scale
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Double scale
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Similar ratio
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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.