Home / 6,405.73-8,840.28-4,279.90

Finding the Fourth Proportional to 6,405.73, 8,840.28 and 4,279.90

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Solution

The fourth proportional to 6,405.73, 8,840.28 and 4,279.90 is: 5,906.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,405.73 : 8,840.28 = 4,279.90 : x
  2. Step 2: Convert to fraction form
    6,405.73/8,840.28 = 4,279.90/x
  3. Step 3: Cross multiply
    6,405.73x = 8,840.28 × 4,279.90
  4. Step 4: Simplify right side
    6,405.73x = 37,835,514.37
  5. Step 5: Solve for x
    x = 37,835,514.37/6,405.73
  6. Step 6: Final answer
    x = 5,906.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.