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Finding the Fourth Proportional to 8,873.12, 13,283.09 and 8,557.69

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Solution

The fourth proportional to 8,873.12, 13,283.09 and 8,557.69 is: 12,810.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,873.12 : 13,283.09 = 8,557.69 : x
  2. Step 2: Convert to fraction form
    8,873.12/13,283.09 = 8,557.69/x
  3. Step 3: Cross multiply
    8,873.12x = 13,283.09 × 8,557.69
  4. Step 4: Simplify right side
    8,873.12x = 113,672,500.05
  5. Step 5: Solve for x
    x = 113,672,500.05/8,873.12
  6. Step 6: Final answer
    x = 12,810.88

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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.