Home / 3,145.36-4,717.92-1,913.08

Finding the Fourth Proportional to 3,145.36, 4,717.92 and 1,913.08

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Solution

The fourth proportional to 3,145.36, 4,717.92 and 1,913.08 is: 2,869.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,145.36 : 4,717.92 = 1,913.08 : x
  2. Step 2: Convert to fraction form
    3,145.36/4,717.92 = 1,913.08/x
  3. Step 3: Cross multiply
    3,145.36x = 4,717.92 × 1,913.08
  4. Step 4: Simplify right side
    3,145.36x = 9,025,758.39
  5. Step 5: Solve for x
    x = 9,025,758.39/3,145.36
  6. Step 6: Final answer
    x = 2,869.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.