Home / 8,259.16-12,389.30-2,415.80

Finding the Fourth Proportional to 8,259.16, 12,389.30 and 2,415.80

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Solution

The fourth proportional to 8,259.16, 12,389.30 and 2,415.80 is: 3,623.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,259.16 : 12,389.30 = 2,415.80 : x
  2. Step 2: Convert to fraction form
    8,259.16/12,389.30 = 2,415.80/x
  3. Step 3: Cross multiply
    8,259.16x = 12,389.30 × 2,415.80
  4. Step 4: Simplify right side
    8,259.16x = 29,930,070.94
  5. Step 5: Solve for x
    x = 29,930,070.94/8,259.16
  6. Step 6: Final answer
    x = 3,623.86

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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.