Home / 2,163.36-2,984.40-1,542.72

Finding the Fourth Proportional to 2,163.36, 2,984.40 and 1,542.72

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Solution

The fourth proportional to 2,163.36, 2,984.40 and 1,542.72 is: 2,128.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,163.36 : 2,984.40 = 1,542.72 : x
  2. Step 2: Convert to fraction form
    2,163.36/2,984.40 = 1,542.72/x
  3. Step 3: Cross multiply
    2,163.36x = 2,984.40 × 1,542.72
  4. Step 4: Simplify right side
    2,163.36x = 4,604,093.57
  5. Step 5: Solve for x
    x = 4,604,093.57/2,163.36
  6. Step 6: Final answer
    x = 2,128.21

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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.