Home / 5,424.22-8,136.33-5,147.20

Finding the Fourth Proportional to 5,424.22, 8,136.33 and 5,147.20

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Solution

The fourth proportional to 5,424.22, 8,136.33 and 5,147.20 is: 7,720.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,424.22 : 8,136.33 = 5,147.20 : x
  2. Step 2: Convert to fraction form
    5,424.22/8,136.33 = 5,147.20/x
  3. Step 3: Cross multiply
    5,424.22x = 8,136.33 × 5,147.20
  4. Step 4: Simplify right side
    5,424.22x = 41,879,278.13
  5. Step 5: Solve for x
    x = 41,879,278.13/5,424.22
  6. Step 6: Final answer
    x = 7,720.80

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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.