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Finding the Fourth Proportional to 8,607.86, 12,907.40 and 3,060.38

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Solution

The fourth proportional to 8,607.86, 12,907.40 and 3,060.38 is: 4,589.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,607.86 : 12,907.40 = 3,060.38 : x
  2. Step 2: Convert to fraction form
    8,607.86/12,907.40 = 3,060.38/x
  3. Step 3: Cross multiply
    8,607.86x = 12,907.40 × 3,060.38
  4. Step 4: Simplify right side
    8,607.86x = 39,501,468.97
  5. Step 5: Solve for x
    x = 39,501,468.97/8,607.86
  6. Step 6: Final answer
    x = 4,589.00

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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.