Home / 6,279.48-9,429.30-5,311.80

Finding the Fourth Proportional to 6,279.48, 9,429.30 and 5,311.80

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Solution

The fourth proportional to 6,279.48, 9,429.30 and 5,311.80 is: 7,976.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,279.48 : 9,429.30 = 5,311.80 : x
  2. Step 2: Convert to fraction form
    6,279.48/9,429.30 = 5,311.80/x
  3. Step 3: Cross multiply
    6,279.48x = 9,429.30 × 5,311.80
  4. Step 4: Simplify right side
    6,279.48x = 50,086,555.74
  5. Step 5: Solve for x
    x = 50,086,555.74/6,279.48
  6. Step 6: Final answer
    x = 7,976.23

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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.