Home / 3,924.40-5,415.08-2,245.20

Finding the Fourth Proportional to 3,924.40, 5,415.08 and 2,245.20

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Solution

The fourth proportional to 3,924.40, 5,415.08 and 2,245.20 is: 3,098.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,924.40 : 5,415.08 = 2,245.20 : x
  2. Step 2: Convert to fraction form
    3,924.40/5,415.08 = 2,245.20/x
  3. Step 3: Cross multiply
    3,924.40x = 5,415.08 × 2,245.20
  4. Step 4: Simplify right side
    3,924.40x = 12,157,937.62
  5. Step 5: Solve for x
    x = 12,157,937.62/3,924.40
  6. Step 6: Final answer
    x = 3,098.04

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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.