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Finding the Fourth Proportional to 3,978.02, 5,966.96 and 1,346.11

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Solution

The fourth proportional to 3,978.02, 5,966.96 and 1,346.11 is: 2,019.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,978.02 : 5,966.96 = 1,346.11 : x
  2. Step 2: Convert to fraction form
    3,978.02/5,966.96 = 1,346.11/x
  3. Step 3: Cross multiply
    3,978.02x = 5,966.96 × 1,346.11
  4. Step 4: Simplify right side
    3,978.02x = 8,032,184.53
  5. Step 5: Solve for x
    x = 8,032,184.53/3,978.02
  6. Step 6: Final answer
    x = 2,019.14

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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.