Home / 4,921.80-7,378.44-2,454.12

Finding the Fourth Proportional to 4,921.80, 7,378.44 and 2,454.12

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Solution

The fourth proportional to 4,921.80, 7,378.44 and 2,454.12 is: 3,679.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,921.80 : 7,378.44 = 2,454.12 : x
  2. Step 2: Convert to fraction form
    4,921.80/7,378.44 = 2,454.12/x
  3. Step 3: Cross multiply
    4,921.80x = 7,378.44 × 2,454.12
  4. Step 4: Simplify right side
    4,921.80x = 18,107,577.17
  5. Step 5: Solve for x
    x = 18,107,577.17/4,921.80
  6. Step 6: Final answer
    x = 3,679.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.