Home / 3,974.16-5,484.30-2,205.78

Finding the Fourth Proportional to 3,974.16, 5,484.30 and 2,205.78

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Solution

The fourth proportional to 3,974.16, 5,484.30 and 2,205.78 is: 3,043.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,974.16 : 5,484.30 = 2,205.78 : x
  2. Step 2: Convert to fraction form
    3,974.16/5,484.30 = 2,205.78/x
  3. Step 3: Cross multiply
    3,974.16x = 5,484.30 × 2,205.78
  4. Step 4: Simplify right side
    3,974.16x = 12,097,159.25
  5. Step 5: Solve for x
    x = 12,097,159.25/3,974.16
  6. Step 6: Final answer
    x = 3,043.95

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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.