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Finding the Fourth Proportional to 7,992, 11,989.35 and 2,726.46

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Solution

The fourth proportional to 7,992, 11,989.35 and 2,726.46 is: 4,090.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,992 : 11,989.35 = 2,726.46 : x
  2. Step 2: Convert to fraction form
    7,992/11,989.35 = 2,726.46/x
  3. Step 3: Cross multiply
    7,992x = 11,989.35 × 2,726.46
  4. Step 4: Simplify right side
    7,992x = 32,688,483.20
  5. Step 5: Solve for x
    x = 32,688,483.20/7,992
  6. Step 6: Final answer
    x = 4,090.15

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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.