Home / 4,081.76-5,631.84-2,665.28

Finding the Fourth Proportional to 4,081.76, 5,631.84 and 2,665.28

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Solution

The fourth proportional to 4,081.76, 5,631.84 and 2,665.28 is: 3,677.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,081.76 : 5,631.84 = 2,665.28 : x
  2. Step 2: Convert to fraction form
    4,081.76/5,631.84 = 2,665.28/x
  3. Step 3: Cross multiply
    4,081.76x = 5,631.84 × 2,665.28
  4. Step 4: Simplify right side
    4,081.76x = 15,010,430.52
  5. Step 5: Solve for x
    x = 15,010,430.52/4,081.76
  6. Step 6: Final answer
    x = 3,677.44

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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.