Home / 5,420.45-8,126.97-2,607.80

Finding the Fourth Proportional to 5,420.45, 8,126.97 and 2,607.80

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Solution

The fourth proportional to 5,420.45, 8,126.97 and 2,607.80 is: 3,909.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,420.45 : 8,126.97 = 2,607.80 : x
  2. Step 2: Convert to fraction form
    5,420.45/8,126.97 = 2,607.80/x
  3. Step 3: Cross multiply
    5,420.45x = 8,126.97 × 2,607.80
  4. Step 4: Simplify right side
    5,420.45x = 21,193,471.73
  5. Step 5: Solve for x
    x = 21,193,471.73/5,420.45
  6. Step 6: Final answer
    x = 3,909.91

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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.