Home / 5,172.15-7,758.18-1,276.59

Finding the Fourth Proportional to 5,172.15, 7,758.18 and 1,276.59

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Solution

The fourth proportional to 5,172.15, 7,758.18 and 1,276.59 is: 1,914.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,172.15 : 7,758.18 = 1,276.59 : x
  2. Step 2: Convert to fraction form
    5,172.15/7,758.18 = 1,276.59/x
  3. Step 3: Cross multiply
    5,172.15x = 7,758.18 × 1,276.59
  4. Step 4: Simplify right side
    5,172.15x = 9,904,015.01
  5. Step 5: Solve for x
    x = 9,904,015.01/5,172.15
  6. Step 6: Final answer
    x = 1,914.87

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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.