Home / 5,128.97-7,693.62-1,619.01

Finding the Fourth Proportional to 5,128.97, 7,693.62 and 1,619.01

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Solution

The fourth proportional to 5,128.97, 7,693.62 and 1,619.01 is: 2,428.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,128.97 : 7,693.62 = 1,619.01 : x
  2. Step 2: Convert to fraction form
    5,128.97/7,693.62 = 1,619.01/x
  3. Step 3: Cross multiply
    5,128.97x = 7,693.62 × 1,619.01
  4. Step 4: Simplify right side
    5,128.97x = 12,456,041.64
  5. Step 5: Solve for x
    x = 12,456,041.64/5,128.97
  6. Step 6: Final answer
    x = 2,428.57

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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.