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Finding the Fourth Proportional to 8,700.86, 13,052.30 and 2,775.68

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Solution

The fourth proportional to 8,700.86, 13,052.30 and 2,775.68 is: 4,163.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,700.86 : 13,052.30 = 2,775.68 : x
  2. Step 2: Convert to fraction form
    8,700.86/13,052.30 = 2,775.68/x
  3. Step 3: Cross multiply
    8,700.86x = 13,052.30 × 2,775.68
  4. Step 4: Simplify right side
    8,700.86x = 36,229,008.06
  5. Step 5: Solve for x
    x = 36,229,008.06/8,700.86
  6. Step 6: Final answer
    x = 4,163.84

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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.