Home / 4,215.50-6,321.23-1,992.48

Finding the Fourth Proportional to 4,215.50, 6,321.23 and 1,992.48

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Solution

The fourth proportional to 4,215.50, 6,321.23 and 1,992.48 is: 2,987.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,215.50 : 6,321.23 = 1,992.48 : x
  2. Step 2: Convert to fraction form
    4,215.50/6,321.23 = 1,992.48/x
  3. Step 3: Cross multiply
    4,215.50x = 6,321.23 × 1,992.48
  4. Step 4: Simplify right side
    4,215.50x = 12,594,921.86
  5. Step 5: Solve for x
    x = 12,594,921.86/4,215.50
  6. Step 6: Final answer
    x = 2,987.77

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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.