Home / 3,990.14-5,501.41-2,571.38

Finding the Fourth Proportional to 3,990.14, 5,501.41 and 2,571.38

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Solution

The fourth proportional to 3,990.14, 5,501.41 and 2,571.38 is: 3,545.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,990.14 : 5,501.41 = 2,571.38 : x
  2. Step 2: Convert to fraction form
    3,990.14/5,501.41 = 2,571.38/x
  3. Step 3: Cross multiply
    3,990.14x = 5,501.41 × 2,571.38
  4. Step 4: Simplify right side
    3,990.14x = 14,146,181.71
  5. Step 5: Solve for x
    x = 14,146,181.71/3,990.14
  6. Step 6: Final answer
    x = 3,545.29

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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.