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Finding the Fourth Proportional to 4,907.91, 7,360.80 and 1,620.22

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Solution

The fourth proportional to 4,907.91, 7,360.80 and 1,620.22 is: 2,429.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,907.91 : 7,360.80 = 1,620.22 : x
  2. Step 2: Convert to fraction form
    4,907.91/7,360.80 = 1,620.22/x
  3. Step 3: Cross multiply
    4,907.91x = 7,360.80 × 1,620.22
  4. Step 4: Simplify right side
    4,907.91x = 11,926,115.38
  5. Step 5: Solve for x
    x = 11,926,115.38/4,907.91
  6. Step 6: Final answer
    x = 2,429.98

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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.