Home / 4,107.55-6,156.90-2,131.20

Finding the Fourth Proportional to 4,107.55, 6,156.90 and 2,131.20

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Solution

The fourth proportional to 4,107.55, 6,156.90 and 2,131.20 is: 3,194.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,107.55 : 6,156.90 = 2,131.20 : x
  2. Step 2: Convert to fraction form
    4,107.55/6,156.90 = 2,131.20/x
  3. Step 3: Cross multiply
    4,107.55x = 6,156.90 × 2,131.20
  4. Step 4: Simplify right side
    4,107.55x = 13,121,585.28
  5. Step 5: Solve for x
    x = 13,121,585.28/4,107.55
  6. Step 6: Final answer
    x = 3,194.50

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Half scale
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Double scale
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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.