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Finding the Fourth Proportional to 4,784.61, 7,176.84 and 2,319.65

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Solution

The fourth proportional to 4,784.61, 7,176.84 and 2,319.65 is: 3,479.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,784.61 : 7,176.84 = 2,319.65 : x
  2. Step 2: Convert to fraction form
    4,784.61/7,176.84 = 2,319.65/x
  3. Step 3: Cross multiply
    4,784.61x = 7,176.84 × 2,319.65
  4. Step 4: Simplify right side
    4,784.61x = 16,647,721.02
  5. Step 5: Solve for x
    x = 16,647,721.02/4,784.61
  6. Step 6: Final answer
    x = 3,479.43

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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.