Home / 3,946.50-5,446.11-2,178.15

Finding the Fourth Proportional to 3,946.50, 5,446.11 and 2,178.15

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Solution

The fourth proportional to 3,946.50, 5,446.11 and 2,178.15 is: 3,005.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,946.50 : 5,446.11 = 2,178.15 : x
  2. Step 2: Convert to fraction form
    3,946.50/5,446.11 = 2,178.15/x
  3. Step 3: Cross multiply
    3,946.50x = 5,446.11 × 2,178.15
  4. Step 4: Simplify right side
    3,946.50x = 11,862,444.50
  5. Step 5: Solve for x
    x = 11,862,444.50/3,946.50
  6. Step 6: Final answer
    x = 3,005.81

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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.