Home / 8,905.72-12,293.84-5,321.95

Finding the Fourth Proportional to 8,905.72, 12,293.84 and 5,321.95

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Solution

The fourth proportional to 8,905.72, 12,293.84 and 5,321.95 is: 7,346.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,905.72 : 12,293.84 = 5,321.95 : x
  2. Step 2: Convert to fraction form
    8,905.72/12,293.84 = 5,321.95/x
  3. Step 3: Cross multiply
    8,905.72x = 12,293.84 × 5,321.95
  4. Step 4: Simplify right side
    8,905.72x = 65,427,201.79
  5. Step 5: Solve for x
    x = 65,427,201.79/8,905.72
  6. Step 6: Final answer
    x = 7,346.65

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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.