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Finding the Fourth Proportional to 4,907.63, 7,361.45 and 1,985.96

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Solution

The fourth proportional to 4,907.63, 7,361.45 and 1,985.96 is: 2,978.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,907.63 : 7,361.45 = 1,985.96 : x
  2. Step 2: Convert to fraction form
    4,907.63/7,361.45 = 1,985.96/x
  3. Step 3: Cross multiply
    4,907.63x = 7,361.45 × 1,985.96
  4. Step 4: Simplify right side
    4,907.63x = 14,619,545.24
  5. Step 5: Solve for x
    x = 14,619,545.24/4,907.63
  6. Step 6: Final answer
    x = 2,978.94

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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.