Home / 4,979.20-7,468.80-3,238.40

Finding the Fourth Proportional to 4,979.20, 7,468.80 and 3,238.40

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Solution

The fourth proportional to 4,979.20, 7,468.80 and 3,238.40 is: 4,857.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,979.20 : 7,468.80 = 3,238.40 : x
  2. Step 2: Convert to fraction form
    4,979.20/7,468.80 = 3,238.40/x
  3. Step 3: Cross multiply
    4,979.20x = 7,468.80 × 3,238.40
  4. Step 4: Simplify right side
    4,979.20x = 24,186,961.92
  5. Step 5: Solve for x
    x = 24,186,961.92/4,979.20
  6. Step 6: Final answer
    x = 4,857.60

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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.