Home / 2,519.20-3,778.87-670.31

Finding the Fourth Proportional to 2,519.20, 3,778.87 and 670.31

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Solution

The fourth proportional to 2,519.20, 3,778.87 and 670.31 is: 1,005.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,519.20 : 3,778.87 = 670.31 : x
  2. Step 2: Convert to fraction form
    2,519.20/3,778.87 = 670.31/x
  3. Step 3: Cross multiply
    2,519.20x = 3,778.87 × 670.31
  4. Step 4: Simplify right side
    2,519.20x = 2,533,014.35
  5. Step 5: Solve for x
    x = 2,533,014.35/2,519.20
  6. Step 6: Final answer
    x = 1,005.48

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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.