Home / 2,163.28-2,985.60-1,231.96

Finding the Fourth Proportional to 2,163.28, 2,985.60 and 1,231.96

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Solution

The fourth proportional to 2,163.28, 2,985.60 and 1,231.96 is: 1,700.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,163.28 : 2,985.60 = 1,231.96 : x
  2. Step 2: Convert to fraction form
    2,163.28/2,985.60 = 1,231.96/x
  3. Step 3: Cross multiply
    2,163.28x = 2,985.60 × 1,231.96
  4. Step 4: Simplify right side
    2,163.28x = 3,678,139.78
  5. Step 5: Solve for x
    x = 3,678,139.78/2,163.28
  6. Step 6: Final answer
    x = 1,700.26

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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.