Home / 3,895.12-5,373.72-2,478.43

Finding the Fourth Proportional to 3,895.12, 5,373.72 and 2,478.43

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Solution

The fourth proportional to 3,895.12, 5,373.72 and 2,478.43 is: 3,419.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,895.12 : 5,373.72 = 2,478.43 : x
  2. Step 2: Convert to fraction form
    3,895.12/5,373.72 = 2,478.43/x
  3. Step 3: Cross multiply
    3,895.12x = 5,373.72 × 2,478.43
  4. Step 4: Simplify right side
    3,895.12x = 13,318,375.43
  5. Step 5: Solve for x
    x = 13,318,375.43/3,895.12
  6. Step 6: Final answer
    x = 3,419.25

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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.