Home / 3,712.10-5,121.86-2,219.77

Finding the Fourth Proportional to 3,712.10, 5,121.86 and 2,219.77

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Solution

The fourth proportional to 3,712.10, 5,121.86 and 2,219.77 is: 3,062.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,712.10 : 5,121.86 = 2,219.77 : x
  2. Step 2: Convert to fraction form
    3,712.10/5,121.86 = 2,219.77/x
  3. Step 3: Cross multiply
    3,712.10x = 5,121.86 × 2,219.77
  4. Step 4: Simplify right side
    3,712.10x = 11,369,327.27
  5. Step 5: Solve for x
    x = 11,369,327.27/3,712.10
  6. Step 6: Final answer
    x = 3,062.78

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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.