Home / 8,467.40-12,686.70-5,385.80

Finding the Fourth Proportional to 8,467.40, 12,686.70 and 5,385.80

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Solution

The fourth proportional to 8,467.40, 12,686.70 and 5,385.80 is: 8,069.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,467.40 : 12,686.70 = 5,385.80 : x
  2. Step 2: Convert to fraction form
    8,467.40/12,686.70 = 5,385.80/x
  3. Step 3: Cross multiply
    8,467.40x = 12,686.70 × 5,385.80
  4. Step 4: Simplify right side
    8,467.40x = 68,328,028.86
  5. Step 5: Solve for x
    x = 68,328,028.86/8,467.40
  6. Step 6: Final answer
    x = 8,069.54

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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.