Home / 3,975.70-5,485.35-2,485.13

Finding the Fourth Proportional to 3,975.70, 5,485.35 and 2,485.13

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Solution

The fourth proportional to 3,975.70, 5,485.35 and 2,485.13 is: 3,428.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,975.70 : 5,485.35 = 2,485.13 : x
  2. Step 2: Convert to fraction form
    3,975.70/5,485.35 = 2,485.13/x
  3. Step 3: Cross multiply
    3,975.70x = 5,485.35 × 2,485.13
  4. Step 4: Simplify right side
    3,975.70x = 13,631,807.85
  5. Step 5: Solve for x
    x = 13,631,807.85/3,975.70
  6. Step 6: Final answer
    x = 3,428.78

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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.