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Finding the Fourth Proportional to 5,653.72, 7,802.13 and 3,136.21

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Solution

The fourth proportional to 5,653.72, 7,802.13 and 3,136.21 is: 4,327.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,653.72 : 7,802.13 = 3,136.21 : x
  2. Step 2: Convert to fraction form
    5,653.72/7,802.13 = 3,136.21/x
  3. Step 3: Cross multiply
    5,653.72x = 7,802.13 × 3,136.21
  4. Step 4: Simplify right side
    5,653.72x = 24,469,136.63
  5. Step 5: Solve for x
    x = 24,469,136.63/5,653.72
  6. Step 6: Final answer
    x = 4,327.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.