Home / 3,051.20-4,576.80-742.70

Finding the Fourth Proportional to 3,051.20, 4,576.80 and 742.70

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Solution

The fourth proportional to 3,051.20, 4,576.80 and 742.70 is: 1,114.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,051.20 : 4,576.80 = 742.70 : x
  2. Step 2: Convert to fraction form
    3,051.20/4,576.80 = 742.70/x
  3. Step 3: Cross multiply
    3,051.20x = 4,576.80 × 742.70
  4. Step 4: Simplify right side
    3,051.20x = 3,399,166.48
  5. Step 5: Solve for x
    x = 3,399,166.48/3,051.20
  6. Step 6: Final answer
    x = 1,114.04

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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.