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Finding the Fourth Proportional to 8,928.30, 12,321.81 and 4,950.66

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Solution

The fourth proportional to 8,928.30, 12,321.81 and 4,950.66 is: 6,832.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,928.30 : 12,321.81 = 4,950.66 : x
  2. Step 2: Convert to fraction form
    8,928.30/12,321.81 = 4,950.66/x
  3. Step 3: Cross multiply
    8,928.30x = 12,321.81 × 4,950.66
  4. Step 4: Simplify right side
    8,928.30x = 61,001,091.89
  5. Step 5: Solve for x
    x = 61,001,091.89/8,928.30
  6. Step 6: Final answer
    x = 6,832.33

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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.