Home / 5,687.04-8,531.76-1,791.60

Finding the Fourth Proportional to 5,687.04, 8,531.76 and 1,791.60

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Solution

The fourth proportional to 5,687.04, 8,531.76 and 1,791.60 is: 2,687.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,687.04 : 8,531.76 = 1,791.60 : x
  2. Step 2: Convert to fraction form
    5,687.04/8,531.76 = 1,791.60/x
  3. Step 3: Cross multiply
    5,687.04x = 8,531.76 × 1,791.60
  4. Step 4: Simplify right side
    5,687.04x = 15,285,501.22
  5. Step 5: Solve for x
    x = 15,285,501.22/5,687.04
  6. Step 6: Final answer
    x = 2,687.78

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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.