Home / 5,427.07-8,135.11-2,142.48

Finding the Fourth Proportional to 5,427.07, 8,135.11 and 2,142.48

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Solution

The fourth proportional to 5,427.07, 8,135.11 and 2,142.48 is: 3,211.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,427.07 : 8,135.11 = 2,142.48 : x
  2. Step 2: Convert to fraction form
    5,427.07/8,135.11 = 2,142.48/x
  3. Step 3: Cross multiply
    5,427.07x = 8,135.11 × 2,142.48
  4. Step 4: Simplify right side
    5,427.07x = 17,429,310.47
  5. Step 5: Solve for x
    x = 17,429,310.47/5,427.07
  6. Step 6: Final answer
    x = 3,211.55

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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.