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Finding the Fourth Proportional to 4,929.93, 7,384.39 and 3,988.84

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Solution

The fourth proportional to 4,929.93, 7,384.39 and 3,988.84 is: 5,974.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,929.93 : 7,384.39 = 3,988.84 : x
  2. Step 2: Convert to fraction form
    4,929.93/7,384.39 = 3,988.84/x
  3. Step 3: Cross multiply
    4,929.93x = 7,384.39 × 3,988.84
  4. Step 4: Simplify right side
    4,929.93x = 29,455,150.21
  5. Step 5: Solve for x
    x = 29,455,150.21/4,929.93
  6. Step 6: Final answer
    x = 5,974.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.