Home / 5,427.40-8,140.26-2,142.76

Finding the Fourth Proportional to 5,427.40, 8,140.26 and 2,142.76

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Solution

The fourth proportional to 5,427.40, 8,140.26 and 2,142.76 is: 3,213.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,427.40 : 8,140.26 = 2,142.76 : x
  2. Step 2: Convert to fraction form
    5,427.40/8,140.26 = 2,142.76/x
  3. Step 3: Cross multiply
    5,427.40x = 8,140.26 × 2,142.76
  4. Step 4: Simplify right side
    5,427.40x = 17,442,623.52
  5. Step 5: Solve for x
    x = 17,442,623.52/5,427.40
  6. Step 6: Final answer
    x = 3,213.81

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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.