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Finding the Fourth Proportional to 3,907.60, 5,862.40 and 2,755.60

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Solution

The fourth proportional to 3,907.60, 5,862.40 and 2,755.60 is: 4,134.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,907.60 : 5,862.40 = 2,755.60 : x
  2. Step 2: Convert to fraction form
    3,907.60/5,862.40 = 2,755.60/x
  3. Step 3: Cross multiply
    3,907.60x = 5,862.40 × 2,755.60
  4. Step 4: Simplify right side
    3,907.60x = 16,154,429.44
  5. Step 5: Solve for x
    x = 16,154,429.44/3,907.60
  6. Step 6: Final answer
    x = 4,134.11

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1.5x scale

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.