Home / 5,519.40-8,279.10-3,769.80

Finding the Fourth Proportional to 5,519.40, 8,279.10 and 3,769.80

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Solution

The fourth proportional to 5,519.40, 8,279.10 and 3,769.80 is: 5,654.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,519.40 : 8,279.10 = 3,769.80 : x
  2. Step 2: Convert to fraction form
    5,519.40/8,279.10 = 3,769.80/x
  3. Step 3: Cross multiply
    5,519.40x = 8,279.10 × 3,769.80
  4. Step 4: Simplify right side
    5,519.40x = 31,210,551.18
  5. Step 5: Solve for x
    x = 31,210,551.18/5,519.40
  6. Step 6: Final answer
    x = 5,654.70

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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.