Home / 2,520.32-3,780.48-1,221.98

Finding the Fourth Proportional to 2,520.32, 3,780.48 and 1,221.98

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Solution

The fourth proportional to 2,520.32, 3,780.48 and 1,221.98 is: 1,832.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,520.32 : 3,780.48 = 1,221.98 : x
  2. Step 2: Convert to fraction form
    2,520.32/3,780.48 = 1,221.98/x
  3. Step 3: Cross multiply
    2,520.32x = 3,780.48 × 1,221.98
  4. Step 4: Simplify right side
    2,520.32x = 4,619,670.95
  5. Step 5: Solve for x
    x = 4,619,670.95/2,520.32
  6. Step 6: Final answer
    x = 1,832.97

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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.