Home / 3,403.65-4,696.78-1,911.28

Finding the Fourth Proportional to 3,403.65, 4,696.78 and 1,911.28

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Solution

The fourth proportional to 3,403.65, 4,696.78 and 1,911.28 is: 2,637.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,403.65 : 4,696.78 = 1,911.28 : x
  2. Step 2: Convert to fraction form
    3,403.65/4,696.78 = 1,911.28/x
  3. Step 3: Cross multiply
    3,403.65x = 4,696.78 × 1,911.28
  4. Step 4: Simplify right side
    3,403.65x = 8,976,861.68
  5. Step 5: Solve for x
    x = 8,976,861.68/3,403.65
  6. Step 6: Final answer
    x = 2,637.42

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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.