Home / 4,923.20-7,384.80-2,979.20

Finding the Fourth Proportional to 4,923.20, 7,384.80 and 2,979.20

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Solution

The fourth proportional to 4,923.20, 7,384.80 and 2,979.20 is: 4,468.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,923.20 : 7,384.80 = 2,979.20 : x
  2. Step 2: Convert to fraction form
    4,923.20/7,384.80 = 2,979.20/x
  3. Step 3: Cross multiply
    4,923.20x = 7,384.80 × 2,979.20
  4. Step 4: Simplify right side
    4,923.20x = 22,000,796.16
  5. Step 5: Solve for x
    x = 22,000,796.16/4,923.20
  6. Step 6: Final answer
    x = 4,468.80

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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.