Home / 3,489.45-4,815.27-1,917.51

Finding the Fourth Proportional to 3,489.45, 4,815.27 and 1,917.51

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Solution

The fourth proportional to 3,489.45, 4,815.27 and 1,917.51 is: 2,646.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,489.45 : 4,815.27 = 1,917.51 : x
  2. Step 2: Convert to fraction form
    3,489.45/4,815.27 = 1,917.51/x
  3. Step 3: Cross multiply
    3,489.45x = 4,815.27 × 1,917.51
  4. Step 4: Simplify right side
    3,489.45x = 9,233,328.38
  5. Step 5: Solve for x
    x = 9,233,328.38/3,489.45
  6. Step 6: Final answer
    x = 2,646.07

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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.