Home / 3,378.66-4,664.07-1,981.50

Finding the Fourth Proportional to 3,378.66, 4,664.07 and 1,981.50

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Solution

The fourth proportional to 3,378.66, 4,664.07 and 1,981.50 is: 2,735.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,378.66 : 4,664.07 = 1,981.50 : x
  2. Step 2: Convert to fraction form
    3,378.66/4,664.07 = 1,981.50/x
  3. Step 3: Cross multiply
    3,378.66x = 4,664.07 × 1,981.50
  4. Step 4: Simplify right side
    3,378.66x = 9,241,854.71
  5. Step 5: Solve for x
    x = 9,241,854.71/3,378.66
  6. Step 6: Final answer
    x = 2,735.36

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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.