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Finding the Fourth Proportional to 8,702.93, 13,050.11 and 3,155.45

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Solution

The fourth proportional to 8,702.93, 13,050.11 and 3,155.45 is: 4,731.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,702.93 : 13,050.11 = 3,155.45 : x
  2. Step 2: Convert to fraction form
    8,702.93/13,050.11 = 3,155.45/x
  3. Step 3: Cross multiply
    8,702.93x = 13,050.11 × 3,155.45
  4. Step 4: Simplify right side
    8,702.93x = 41,178,912.24
  5. Step 5: Solve for x
    x = 41,178,912.24/8,702.93
  6. Step 6: Final answer
    x = 4,731.61

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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.