Home / 3,974.28-5,485-2,295.80

Finding the Fourth Proportional to 3,974.28, 5,485 and 2,295.80

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Solution

The fourth proportional to 3,974.28, 5,485 and 2,295.80 is: 3,168.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,974.28 : 5,485 = 2,295.80 : x
  2. Step 2: Convert to fraction form
    3,974.28/5,485 = 2,295.80/x
  3. Step 3: Cross multiply
    3,974.28x = 5,485 × 2,295.80
  4. Step 4: Simplify right side
    3,974.28x = 12,592,463.00
  5. Step 5: Solve for x
    x = 12,592,463.00/3,974.28
  6. Step 6: Final answer
    x = 3,168.49

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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.