Home / 5,136.84-7,704.38-1,438.20

Finding the Fourth Proportional to 5,136.84, 7,704.38 and 1,438.20

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Solution

The fourth proportional to 5,136.84, 7,704.38 and 1,438.20 is: 2,157.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,136.84 : 7,704.38 = 1,438.20 : x
  2. Step 2: Convert to fraction form
    5,136.84/7,704.38 = 1,438.20/x
  3. Step 3: Cross multiply
    5,136.84x = 7,704.38 × 1,438.20
  4. Step 4: Simplify right side
    5,136.84x = 11,080,442.91
  5. Step 5: Solve for x
    x = 11,080,442.91/5,136.84
  6. Step 6: Final answer
    x = 2,157.05

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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.