Home / 3,655.80-5,045.32-2,163.48

Finding the Fourth Proportional to 3,655.80, 5,045.32 and 2,163.48

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Solution

The fourth proportional to 3,655.80, 5,045.32 and 2,163.48 is: 2,985.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,655.80 : 5,045.32 = 2,163.48 : x
  2. Step 2: Convert to fraction form
    3,655.80/5,045.32 = 2,163.48/x
  3. Step 3: Cross multiply
    3,655.80x = 5,045.32 × 2,163.48
  4. Step 4: Simplify right side
    3,655.80x = 10,915,448.91
  5. Step 5: Solve for x
    x = 10,915,448.91/3,655.80
  6. Step 6: Final answer
    x = 2,985.79

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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.