Home / 1,442.28-2,163.48-712.44

Finding the Fourth Proportional to 1,442.28, 2,163.48 and 712.44

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Solution

The fourth proportional to 1,442.28, 2,163.48 and 712.44 is: 1,068.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,442.28 : 2,163.48 = 712.44 : x
  2. Step 2: Convert to fraction form
    1,442.28/2,163.48 = 712.44/x
  3. Step 3: Cross multiply
    1,442.28x = 2,163.48 × 712.44
  4. Step 4: Simplify right side
    1,442.28x = 1,541,349.69
  5. Step 5: Solve for x
    x = 1,541,349.69/1,442.28
  6. Step 6: Final answer
    x = 1,068.69

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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.