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Finding the Fourth Proportional to 8,535, 12,802.64 and 2,379

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Solution

The fourth proportional to 8,535, 12,802.64 and 2,379 is: 3,568.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,535 : 12,802.64 = 2,379 : x
  2. Step 2: Convert to fraction form
    8,535/12,802.64 = 2,379/x
  3. Step 3: Cross multiply
    8,535x = 12,802.64 × 2,379
  4. Step 4: Simplify right side
    8,535x = 30,457,480.56
  5. Step 5: Solve for x
    x = 30,457,480.56/8,535
  6. Step 6: Final answer
    x = 3,568.54

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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.