Home / 5,427.84-8,136.26-2,139.64

Finding the Fourth Proportional to 5,427.84, 8,136.26 and 2,139.64

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Solution

The fourth proportional to 5,427.84, 8,136.26 and 2,139.64 is: 3,207.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,427.84 : 8,136.26 = 2,139.64 : x
  2. Step 2: Convert to fraction form
    5,427.84/8,136.26 = 2,139.64/x
  3. Step 3: Cross multiply
    5,427.84x = 8,136.26 × 2,139.64
  4. Step 4: Simplify right side
    5,427.84x = 17,408,667.35
  5. Step 5: Solve for x
    x = 17,408,667.35/5,427.84
  6. Step 6: Final answer
    x = 3,207.29

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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.