Home / 8,520.32-12,781.80-2,676.38

Finding the Fourth Proportional to 8,520.32, 12,781.80 and 2,676.38

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Solution

The fourth proportional to 8,520.32, 12,781.80 and 2,676.38 is: 4,014.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,520.32 : 12,781.80 = 2,676.38 : x
  2. Step 2: Convert to fraction form
    8,520.32/12,781.80 = 2,676.38/x
  3. Step 3: Cross multiply
    8,520.32x = 12,781.80 × 2,676.38
  4. Step 4: Simplify right side
    8,520.32x = 34,208,889.98
  5. Step 5: Solve for x
    x = 34,208,889.98/8,520.32
  6. Step 6: Final answer
    x = 4,014.98

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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.