Home / 5,319.78-7,341.31-3,081.79

Finding the Fourth Proportional to 5,319.78, 7,341.31 and 3,081.79

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Solution

The fourth proportional to 5,319.78, 7,341.31 and 3,081.79 is: 4,252.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,319.78 : 7,341.31 = 3,081.79 : x
  2. Step 2: Convert to fraction form
    5,319.78/7,341.31 = 3,081.79/x
  3. Step 3: Cross multiply
    5,319.78x = 7,341.31 × 3,081.79
  4. Step 4: Simplify right side
    5,319.78x = 22,624,323.63
  5. Step 5: Solve for x
    x = 22,624,323.63/5,319.78
  6. Step 6: Final answer
    x = 4,252.87

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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.