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Finding the Fourth Proportional to 8,607.95, 12,899.77 and 3,675.86

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Solution

The fourth proportional to 8,607.95, 12,899.77 and 3,675.86 is: 5,508.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,607.95 : 12,899.77 = 3,675.86 : x
  2. Step 2: Convert to fraction form
    8,607.95/12,899.77 = 3,675.86/x
  3. Step 3: Cross multiply
    8,607.95x = 12,899.77 × 3,675.86
  4. Step 4: Simplify right side
    8,607.95x = 47,417,674.86
  5. Step 5: Solve for x
    x = 47,417,674.86/8,607.95
  6. Step 6: Final answer
    x = 5,508.59

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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.