Home / 1,442.90-2,163.80-1,138.34

Finding the Fourth Proportional to 1,442.90, 2,163.80 and 1,138.34

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Solution

The fourth proportional to 1,442.90, 2,163.80 and 1,138.34 is: 1,707.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,442.90 : 2,163.80 = 1,138.34 : x
  2. Step 2: Convert to fraction form
    1,442.90/2,163.80 = 1,138.34/x
  3. Step 3: Cross multiply
    1,442.90x = 2,163.80 × 1,138.34
  4. Step 4: Simplify right side
    1,442.90x = 2,463,123.58
  5. Step 5: Solve for x
    x = 2,463,123.58/1,442.90
  6. Step 6: Final answer
    x = 1,707.07

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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.