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Finding the Fourth Proportional to 7,052.78, 9,731.94 and 3,908.36

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Solution

The fourth proportional to 7,052.78, 9,731.94 and 3,908.36 is: 5,393.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,052.78 : 9,731.94 = 3,908.36 : x
  2. Step 2: Convert to fraction form
    7,052.78/9,731.94 = 3,908.36/x
  3. Step 3: Cross multiply
    7,052.78x = 9,731.94 × 3,908.36
  4. Step 4: Simplify right side
    7,052.78x = 38,035,925.02
  5. Step 5: Solve for x
    x = 38,035,925.02/7,052.78
  6. Step 6: Final answer
    x = 5,393.04

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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.