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Finding the Fourth Proportional to 2,757.26, 4,136.15 and 782.93

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Solution

The fourth proportional to 2,757.26, 4,136.15 and 782.93 is: 1,174.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,757.26 : 4,136.15 = 782.93 : x
  2. Step 2: Convert to fraction form
    2,757.26/4,136.15 = 782.93/x
  3. Step 3: Cross multiply
    2,757.26x = 4,136.15 × 782.93
  4. Step 4: Simplify right side
    2,757.26x = 3,238,315.92
  5. Step 5: Solve for x
    x = 3,238,315.92/2,757.26
  6. Step 6: Final answer
    x = 1,174.47

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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.