Home / 8,379.02-12,562.32-4,215.98

Finding the Fourth Proportional to 8,379.02, 12,562.32 and 4,215.98

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Solution

The fourth proportional to 8,379.02, 12,562.32 and 4,215.98 is: 6,320.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,379.02 : 12,562.32 = 4,215.98 : x
  2. Step 2: Convert to fraction form
    8,379.02/12,562.32 = 4,215.98/x
  3. Step 3: Cross multiply
    8,379.02x = 12,562.32 × 4,215.98
  4. Step 4: Simplify right side
    8,379.02x = 52,962,489.87
  5. Step 5: Solve for x
    x = 52,962,489.87/8,379.02
  6. Step 6: Final answer
    x = 6,320.85

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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.