Home / 3,913.90-5,401.04-2,145.48

Finding the Fourth Proportional to 3,913.90, 5,401.04 and 2,145.48

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Solution

The fourth proportional to 3,913.90, 5,401.04 and 2,145.48 is: 2,960.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,913.90 : 5,401.04 = 2,145.48 : x
  2. Step 2: Convert to fraction form
    3,913.90/5,401.04 = 2,145.48/x
  3. Step 3: Cross multiply
    3,913.90x = 5,401.04 × 2,145.48
  4. Step 4: Simplify right side
    3,913.90x = 11,587,823.30
  5. Step 5: Solve for x
    x = 11,587,823.30/3,913.90
  6. Step 6: Final answer
    x = 2,960.68

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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.