Home / 4,252.80-6,379.40-1,331.20

Finding the Fourth Proportional to 4,252.80, 6,379.40 and 1,331.20

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Solution

The fourth proportional to 4,252.80, 6,379.40 and 1,331.20 is: 1,996.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,252.80 : 6,379.40 = 1,331.20 : x
  2. Step 2: Convert to fraction form
    4,252.80/6,379.40 = 1,331.20/x
  3. Step 3: Cross multiply
    4,252.80x = 6,379.40 × 1,331.20
  4. Step 4: Simplify right side
    4,252.80x = 8,492,257.28
  5. Step 5: Solve for x
    x = 8,492,257.28/4,252.80
  6. Step 6: Final answer
    x = 1,996.86

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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.