Home / 1,908.45-2,633.91-1,122.57

Finding the Fourth Proportional to 1,908.45, 2,633.91 and 1,122.57

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Solution

The fourth proportional to 1,908.45, 2,633.91 and 1,122.57 is: 1,549.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,908.45 : 2,633.91 = 1,122.57 : x
  2. Step 2: Convert to fraction form
    1,908.45/2,633.91 = 1,122.57/x
  3. Step 3: Cross multiply
    1,908.45x = 2,633.91 × 1,122.57
  4. Step 4: Simplify right side
    1,908.45x = 2,956,742.74
  5. Step 5: Solve for x
    x = 2,956,742.74/1,908.45
  6. Step 6: Final answer
    x = 1,549.29

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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.