Home / 5,424.36-8,136.80-2,647.74

Finding the Fourth Proportional to 5,424.36, 8,136.80 and 2,647.74

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Solution

The fourth proportional to 5,424.36, 8,136.80 and 2,647.74 is: 3,971.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,424.36 : 8,136.80 = 2,647.74 : x
  2. Step 2: Convert to fraction form
    5,424.36/8,136.80 = 2,647.74/x
  3. Step 3: Cross multiply
    5,424.36x = 8,136.80 × 2,647.74
  4. Step 4: Simplify right side
    5,424.36x = 21,544,130.83
  5. Step 5: Solve for x
    x = 21,544,130.83/5,424.36
  6. Step 6: Final answer
    x = 3,971.74

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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.