Home / 5,136.81-7,704.63-1,439.34

Finding the Fourth Proportional to 5,136.81, 7,704.63 and 1,439.34

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Solution

The fourth proportional to 5,136.81, 7,704.63 and 1,439.34 is: 2,158.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,136.81 : 7,704.63 = 1,439.34 : x
  2. Step 2: Convert to fraction form
    5,136.81/7,704.63 = 1,439.34/x
  3. Step 3: Cross multiply
    5,136.81x = 7,704.63 × 1,439.34
  4. Step 4: Simplify right side
    5,136.81x = 11,089,582.14
  5. Step 5: Solve for x
    x = 11,089,582.14/5,136.81
  6. Step 6: Final answer
    x = 2,158.85

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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.