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Finding the Fourth Proportional to 4,985.38, 7,481.30 and 1,907.38

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Solution

The fourth proportional to 4,985.38, 7,481.30 and 1,907.38 is: 2,862.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,985.38 : 7,481.30 = 1,907.38 : x
  2. Step 2: Convert to fraction form
    4,985.38/7,481.30 = 1,907.38/x
  3. Step 3: Cross multiply
    4,985.38x = 7,481.30 × 1,907.38
  4. Step 4: Simplify right side
    4,985.38x = 14,269,681.99
  5. Step 5: Solve for x
    x = 14,269,681.99/4,985.38
  6. Step 6: Final answer
    x = 2,862.31

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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.