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Finding the Fourth Proportional to 8,591, 12,888.66 and 2,435

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Solution

The fourth proportional to 8,591, 12,888.66 and 2,435 is: 3,653.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,591 : 12,888.66 = 2,435 : x
  2. Step 2: Convert to fraction form
    8,591/12,888.66 = 2,435/x
  3. Step 3: Cross multiply
    8,591x = 12,888.66 × 2,435
  4. Step 4: Simplify right side
    8,591x = 31,383,887.10
  5. Step 5: Solve for x
    x = 31,383,887.10/8,591
  6. Step 6: Final answer
    x = 3,653.11

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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.