Home / 5,627.75-8,437.05-2,115.80

Finding the Fourth Proportional to 5,627.75, 8,437.05 and 2,115.80

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Solution

The fourth proportional to 5,627.75, 8,437.05 and 2,115.80 is: 3,171.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,627.75 : 8,437.05 = 2,115.80 : x
  2. Step 2: Convert to fraction form
    5,627.75/8,437.05 = 2,115.80/x
  3. Step 3: Cross multiply
    5,627.75x = 8,437.05 × 2,115.80
  4. Step 4: Simplify right side
    5,627.75x = 17,851,110.39
  5. Step 5: Solve for x
    x = 17,851,110.39/5,627.75
  6. Step 6: Final answer
    x = 3,171.98

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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.