Home / 5,172.12-7,758.14-1,276.54

Finding the Fourth Proportional to 5,172.12, 7,758.14 and 1,276.54

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Solution

The fourth proportional to 5,172.12, 7,758.14 and 1,276.54 is: 1,914.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,172.12 : 7,758.14 = 1,276.54 : x
  2. Step 2: Convert to fraction form
    5,172.12/7,758.14 = 1,276.54/x
  3. Step 3: Cross multiply
    5,172.12x = 7,758.14 × 1,276.54
  4. Step 4: Simplify right side
    5,172.12x = 9,903,576.04
  5. Step 5: Solve for x
    x = 9,903,576.04/5,172.12
  6. Step 6: Final answer
    x = 1,914.80

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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.