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Finding the Fourth Proportional to 6,890.22, 9,507.06 and 4,879.62

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Solution

The fourth proportional to 6,890.22, 9,507.06 and 4,879.62 is: 6,732.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,890.22 : 9,507.06 = 4,879.62 : x
  2. Step 2: Convert to fraction form
    6,890.22/9,507.06 = 4,879.62/x
  3. Step 3: Cross multiply
    6,890.22x = 9,507.06 × 4,879.62
  4. Step 4: Simplify right side
    6,890.22x = 46,390,840.12
  5. Step 5: Solve for x
    x = 46,390,840.12/6,890.22
  6. Step 6: Final answer
    x = 6,732.85

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1.5x scale

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.