Home / 3,913.98-5,401.35-2,145.62

Finding the Fourth Proportional to 3,913.98, 5,401.35 and 2,145.62

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Solution

The fourth proportional to 3,913.98, 5,401.35 and 2,145.62 is: 2,960.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,913.98 : 5,401.35 = 2,145.62 : x
  2. Step 2: Convert to fraction form
    3,913.98/5,401.35 = 2,145.62/x
  3. Step 3: Cross multiply
    3,913.98x = 5,401.35 × 2,145.62
  4. Step 4: Simplify right side
    3,913.98x = 11,589,217.58
  5. Step 5: Solve for x
    x = 11,589,217.58/3,913.98
  6. Step 6: Final answer
    x = 2,960.98

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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.