Home / 3,604.13-4,972.85-2,187.78

Finding the Fourth Proportional to 3,604.13, 4,972.85 and 2,187.78

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Solution

The fourth proportional to 3,604.13, 4,972.85 and 2,187.78 is: 3,018.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,604.13 : 4,972.85 = 2,187.78 : x
  2. Step 2: Convert to fraction form
    3,604.13/4,972.85 = 2,187.78/x
  3. Step 3: Cross multiply
    3,604.13x = 4,972.85 × 2,187.78
  4. Step 4: Simplify right side
    3,604.13x = 10,879,499.04
  5. Step 5: Solve for x
    x = 10,879,499.04/3,604.13
  6. Step 6: Final answer
    x = 3,018.62

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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.