Home / 3,981.76-5,495.36-2,409.55

Finding the Fourth Proportional to 3,981.76, 5,495.36 and 2,409.55

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Solution

The fourth proportional to 3,981.76, 5,495.36 and 2,409.55 is: 3,325.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981.76 : 5,495.36 = 2,409.55 : x
  2. Step 2: Convert to fraction form
    3,981.76/5,495.36 = 2,409.55/x
  3. Step 3: Cross multiply
    3,981.76x = 5,495.36 × 2,409.55
  4. Step 4: Simplify right side
    3,981.76x = 13,241,344.69
  5. Step 5: Solve for x
    x = 13,241,344.69/3,981.76
  6. Step 6: Final answer
    x = 3,325.50

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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.