Home / 5,125.12-7,073.92-3,136

Finding the Fourth Proportional to 5,125.12, 7,073.92 and 3,136

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Solution

The fourth proportional to 5,125.12, 7,073.92 and 3,136 is: 4,328.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,125.12 : 7,073.92 = 3,136 : x
  2. Step 2: Convert to fraction form
    5,125.12/7,073.92 = 3,136/x
  3. Step 3: Cross multiply
    5,125.12x = 7,073.92 × 3,136
  4. Step 4: Simplify right side
    5,125.12x = 22,183,813.12
  5. Step 5: Solve for x
    x = 22,183,813.12/5,125.12
  6. Step 6: Final answer
    x = 4,328.45

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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.