Home / 5,490.60-8,236.86-1,791.80

Finding the Fourth Proportional to 5,490.60, 8,236.86 and 1,791.80

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Solution

The fourth proportional to 5,490.60, 8,236.86 and 1,791.80 is: 2,688.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,490.60 : 8,236.86 = 1,791.80 : x
  2. Step 2: Convert to fraction form
    5,490.60/8,236.86 = 1,791.80/x
  3. Step 3: Cross multiply
    5,490.60x = 8,236.86 × 1,791.80
  4. Step 4: Simplify right side
    5,490.60x = 14,758,805.75
  5. Step 5: Solve for x
    x = 14,758,805.75/5,490.60
  6. Step 6: Final answer
    x = 2,688.01

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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.