Home / 3,428.23-5,138.13-1,948.69

Finding the Fourth Proportional to 3,428.23, 5,138.13 and 1,948.69

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Solution

The fourth proportional to 3,428.23, 5,138.13 and 1,948.69 is: 2,920.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,428.23 : 5,138.13 = 1,948.69 : x
  2. Step 2: Convert to fraction form
    3,428.23/5,138.13 = 1,948.69/x
  3. Step 3: Cross multiply
    3,428.23x = 5,138.13 × 1,948.69
  4. Step 4: Simplify right side
    3,428.23x = 10,012,611.71
  5. Step 5: Solve for x
    x = 10,012,611.71/3,428.23
  6. Step 6: Final answer
    x = 2,920.64

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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.