Home / 3,379-4,663.56-1,981.76

Finding the Fourth Proportional to 3,379, 4,663.56 and 1,981.76

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Solution

The fourth proportional to 3,379, 4,663.56 and 1,981.76 is: 2,735.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,379 : 4,663.56 = 1,981.76 : x
  2. Step 2: Convert to fraction form
    3,379/4,663.56 = 1,981.76/x
  3. Step 3: Cross multiply
    3,379x = 4,663.56 × 1,981.76
  4. Step 4: Simplify right side
    3,379x = 9,242,056.67
  5. Step 5: Solve for x
    x = 9,242,056.67/3,379
  6. Step 6: Final answer
    x = 2,735.15

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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.