Home / 4,905.20-6,761.40-3,855.44

Finding the Fourth Proportional to 4,905.20, 6,761.40 and 3,855.44

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Solution

The fourth proportional to 4,905.20, 6,761.40 and 3,855.44 is: 5,314.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,905.20 : 6,761.40 = 3,855.44 : x
  2. Step 2: Convert to fraction form
    4,905.20/6,761.40 = 3,855.44/x
  3. Step 3: Cross multiply
    4,905.20x = 6,761.40 × 3,855.44
  4. Step 4: Simplify right side
    4,905.20x = 26,068,172.02
  5. Step 5: Solve for x
    x = 26,068,172.02/4,905.20
  6. Step 6: Final answer
    x = 5,314.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.