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Finding the Fourth Proportional to 3,334.76, 4,999.43 and 1,388.42

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Solution

The fourth proportional to 3,334.76, 4,999.43 and 1,388.42 is: 2,081.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,334.76 : 4,999.43 = 1,388.42 : x
  2. Step 2: Convert to fraction form
    3,334.76/4,999.43 = 1,388.42/x
  3. Step 3: Cross multiply
    3,334.76x = 4,999.43 × 1,388.42
  4. Step 4: Simplify right side
    3,334.76x = 6,941,301.66
  5. Step 5: Solve for x
    x = 6,941,301.66/3,334.76
  6. Step 6: Final answer
    x = 2,081.50

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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.