Home / 5,405.38-8,136.75-3,856.11

Finding the Fourth Proportional to 5,405.38, 8,136.75 and 3,856.11

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Solution

The fourth proportional to 5,405.38, 8,136.75 and 3,856.11 is: 5,804.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,405.38 : 8,136.75 = 3,856.11 : x
  2. Step 2: Convert to fraction form
    5,405.38/8,136.75 = 3,856.11/x
  3. Step 3: Cross multiply
    5,405.38x = 8,136.75 × 3,856.11
  4. Step 4: Simplify right side
    5,405.38x = 31,376,186.99
  5. Step 5: Solve for x
    x = 31,376,186.99/5,405.38
  6. Step 6: Final answer
    x = 5,804.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.