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Finding the Fourth Proportional to 5,339.72, 7,369.08 and 2,981.81

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Solution

The fourth proportional to 5,339.72, 7,369.08 and 2,981.81 is: 4,115.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,339.72 : 7,369.08 = 2,981.81 : x
  2. Step 2: Convert to fraction form
    5,339.72/7,369.08 = 2,981.81/x
  3. Step 3: Cross multiply
    5,339.72x = 7,369.08 × 2,981.81
  4. Step 4: Simplify right side
    5,339.72x = 21,973,203.68
  5. Step 5: Solve for x
    x = 21,973,203.68/5,339.72
  6. Step 6: Final answer
    x = 4,115.05

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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.