Home / 5,424.90-8,136.43-2,138.93

Finding the Fourth Proportional to 5,424.90, 8,136.43 and 2,138.93

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Solution

The fourth proportional to 5,424.90, 8,136.43 and 2,138.93 is: 3,208.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,424.90 : 8,136.43 = 2,138.93 : x
  2. Step 2: Convert to fraction form
    5,424.90/8,136.43 = 2,138.93/x
  3. Step 3: Cross multiply
    5,424.90x = 8,136.43 × 2,138.93
  4. Step 4: Simplify right side
    5,424.90x = 17,403,254.22
  5. Step 5: Solve for x
    x = 17,403,254.22/5,424.90
  6. Step 6: Final answer
    x = 3,208.03

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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.