Home / 2,616.38-3,610.58-1,421.35

Finding the Fourth Proportional to 2,616.38, 3,610.58 and 1,421.35

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Solution

The fourth proportional to 2,616.38, 3,610.58 and 1,421.35 is: 1,961.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,616.38 : 3,610.58 = 1,421.35 : x
  2. Step 2: Convert to fraction form
    2,616.38/3,610.58 = 1,421.35/x
  3. Step 3: Cross multiply
    2,616.38x = 3,610.58 × 1,421.35
  4. Step 4: Simplify right side
    2,616.38x = 5,131,890.78
  5. Step 5: Solve for x
    x = 5,131,890.78/2,616.38
  6. Step 6: Final answer
    x = 1,961.45

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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.