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Finding the Fourth Proportional to 8,654.94, 12,970.26 and 3,720.87

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Solution

The fourth proportional to 8,654.94, 12,970.26 and 3,720.87 is: 5,576.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,654.94 : 12,970.26 = 3,720.87 : x
  2. Step 2: Convert to fraction form
    8,654.94/12,970.26 = 3,720.87/x
  3. Step 3: Cross multiply
    8,654.94x = 12,970.26 × 3,720.87
  4. Step 4: Simplify right side
    8,654.94x = 48,260,651.33
  5. Step 5: Solve for x
    x = 48,260,651.33/8,654.94
  6. Step 6: Final answer
    x = 5,576.08

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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.