Home / 5,423.67-8,138.79-2,136.15

Finding the Fourth Proportional to 5,423.67, 8,138.79 and 2,136.15

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Solution

The fourth proportional to 5,423.67, 8,138.79 and 2,136.15 is: 3,205.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,423.67 : 8,138.79 = 2,136.15 : x
  2. Step 2: Convert to fraction form
    5,423.67/8,138.79 = 2,136.15/x
  3. Step 3: Cross multiply
    5,423.67x = 8,138.79 × 2,136.15
  4. Step 4: Simplify right side
    5,423.67x = 17,385,676.26
  5. Step 5: Solve for x
    x = 17,385,676.26/5,423.67
  6. Step 6: Final answer
    x = 3,205.52

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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.