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Finding the Fourth Proportional to 8,617.02, 12,903.60 and 7,895.31

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Solution

The fourth proportional to 8,617.02, 12,903.60 and 7,895.31 is: 11,822.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,617.02 : 12,903.60 = 7,895.31 : x
  2. Step 2: Convert to fraction form
    8,617.02/12,903.60 = 7,895.31/x
  3. Step 3: Cross multiply
    8,617.02x = 12,903.60 × 7,895.31
  4. Step 4: Simplify right side
    8,617.02x = 101,877,922.12
  5. Step 5: Solve for x
    x = 101,877,922.12/8,617.02
  6. Step 6: Final answer
    x = 11,822.87

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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.