Home / 3,990.92-5,503.30-3,433.16

Finding the Fourth Proportional to 3,990.92, 5,503.30 and 3,433.16

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Solution

The fourth proportional to 3,990.92, 5,503.30 and 3,433.16 is: 4,734.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,990.92 : 5,503.30 = 3,433.16 : x
  2. Step 2: Convert to fraction form
    3,990.92/5,503.30 = 3,433.16/x
  3. Step 3: Cross multiply
    3,990.92x = 5,503.30 × 3,433.16
  4. Step 4: Simplify right side
    3,990.92x = 18,893,709.43
  5. Step 5: Solve for x
    x = 18,893,709.43/3,990.92
  6. Step 6: Final answer
    x = 4,734.17

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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.