Home / 1,202.08-1,655.76-1,121.44

Finding the Fourth Proportional to 1,202.08, 1,655.76 and 1,121.44

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Solution

The fourth proportional to 1,202.08, 1,655.76 and 1,121.44 is: 1,544.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,202.08 : 1,655.76 = 1,121.44 : x
  2. Step 2: Convert to fraction form
    1,202.08/1,655.76 = 1,121.44/x
  3. Step 3: Cross multiply
    1,202.08x = 1,655.76 × 1,121.44
  4. Step 4: Simplify right side
    1,202.08x = 1,856,835.49
  5. Step 5: Solve for x
    x = 1,856,835.49/1,202.08
  6. Step 6: Final answer
    x = 1,544.69

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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.