Home / 3,619.67-4,995.86-2,128.07

Finding the Fourth Proportional to 3,619.67, 4,995.86 and 2,128.07

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Solution

The fourth proportional to 3,619.67, 4,995.86 and 2,128.07 is: 2,937.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,619.67 : 4,995.86 = 2,128.07 : x
  2. Step 2: Convert to fraction form
    3,619.67/4,995.86 = 2,128.07/x
  3. Step 3: Cross multiply
    3,619.67x = 4,995.86 × 2,128.07
  4. Step 4: Simplify right side
    3,619.67x = 10,631,539.79
  5. Step 5: Solve for x
    x = 10,631,539.79/3,619.67
  6. Step 6: Final answer
    x = 2,937.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.