Home / 3,913.92-5,401.02-2,145.48

Finding the Fourth Proportional to 3,913.92, 5,401.02 and 2,145.48

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Solution

The fourth proportional to 3,913.92, 5,401.02 and 2,145.48 is: 2,960.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,913.92 : 5,401.02 = 2,145.48 : x
  2. Step 2: Convert to fraction form
    3,913.92/5,401.02 = 2,145.48/x
  3. Step 3: Cross multiply
    3,913.92x = 5,401.02 × 2,145.48
  4. Step 4: Simplify right side
    3,913.92x = 11,587,780.39
  5. Step 5: Solve for x
    x = 11,587,780.39/3,913.92
  6. Step 6: Final answer
    x = 2,960.66

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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.