Home / 3,913.68-5,401.12-2,145.29

Finding the Fourth Proportional to 3,913.68, 5,401.12 and 2,145.29

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Solution

The fourth proportional to 3,913.68, 5,401.12 and 2,145.29 is: 2,960.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,913.68 : 5,401.12 = 2,145.29 : x
  2. Step 2: Convert to fraction form
    3,913.68/5,401.12 = 2,145.29/x
  3. Step 3: Cross multiply
    3,913.68x = 5,401.12 × 2,145.29
  4. Step 4: Simplify right side
    3,913.68x = 11,586,946.41
  5. Step 5: Solve for x
    x = 11,586,946.41/3,913.68
  6. Step 6: Final answer
    x = 2,960.63

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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.