Home / 4,490.90-6,200.10-3,992.12

Finding the Fourth Proportional to 4,490.90, 6,200.10 and 3,992.12

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Solution

The fourth proportional to 4,490.90, 6,200.10 and 3,992.12 is: 5,511.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,490.90 : 6,200.10 = 3,992.12 : x
  2. Step 2: Convert to fraction form
    4,490.90/6,200.10 = 3,992.12/x
  3. Step 3: Cross multiply
    4,490.90x = 6,200.10 × 3,992.12
  4. Step 4: Simplify right side
    4,490.90x = 24,751,543.21
  5. Step 5: Solve for x
    x = 24,751,543.21/4,490.90
  6. Step 6: Final answer
    x = 5,511.49

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.