Home / 5,145.72-7,718.60-1,448.36

Finding the Fourth Proportional to 5,145.72, 7,718.60 and 1,448.36

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Solution

The fourth proportional to 5,145.72, 7,718.60 and 1,448.36 is: 2,172.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,145.72 : 7,718.60 = 1,448.36 : x
  2. Step 2: Convert to fraction form
    5,145.72/7,718.60 = 1,448.36/x
  3. Step 3: Cross multiply
    5,145.72x = 7,718.60 × 1,448.36
  4. Step 4: Simplify right side
    5,145.72x = 11,179,311.50
  5. Step 5: Solve for x
    x = 11,179,311.50/5,145.72
  6. Step 6: Final answer
    x = 2,172.55

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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.