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Finding the Fourth Proportional to 4,879.48, 7,320.30 and 2,281

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Solution

The fourth proportional to 4,879.48, 7,320.30 and 2,281 is: 3,422.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,879.48 : 7,320.30 = 2,281 : x
  2. Step 2: Convert to fraction form
    4,879.48/7,320.30 = 2,281/x
  3. Step 3: Cross multiply
    4,879.48x = 7,320.30 × 2,281
  4. Step 4: Simplify right side
    4,879.48x = 16,697,604.30
  5. Step 5: Solve for x
    x = 16,697,604.30/4,879.48
  6. Step 6: Final answer
    x = 3,422.00

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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.