Home / 1,913.13-2,639.22-1,204.65

Finding the Fourth Proportional to 1,913.13, 2,639.22 and 1,204.65

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Solution

The fourth proportional to 1,913.13, 2,639.22 and 1,204.65 is: 1,661.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,913.13 : 2,639.22 = 1,204.65 : x
  2. Step 2: Convert to fraction form
    1,913.13/2,639.22 = 1,204.65/x
  3. Step 3: Cross multiply
    1,913.13x = 2,639.22 × 1,204.65
  4. Step 4: Simplify right side
    1,913.13x = 3,179,336.37
  5. Step 5: Solve for x
    x = 3,179,336.37/1,913.13
  6. Step 6: Final answer
    x = 1,661.85

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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.