Home / 8,379.21-12,553.02-6,521.34

Finding the Fourth Proportional to 8,379.21, 12,553.02 and 6,521.34

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Solution

The fourth proportional to 8,379.21, 12,553.02 and 6,521.34 is: 9,769.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,379.21 : 12,553.02 = 6,521.34 : x
  2. Step 2: Convert to fraction form
    8,379.21/12,553.02 = 6,521.34/x
  3. Step 3: Cross multiply
    8,379.21x = 12,553.02 × 6,521.34
  4. Step 4: Simplify right side
    8,379.21x = 81,862,511.45
  5. Step 5: Solve for x
    x = 81,862,511.45/8,379.21
  6. Step 6: Final answer
    x = 9,769.72

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1.5x scale

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.