Home / 1,434.11-2,149.79-611.25

Finding the Fourth Proportional to 1,434.11, 2,149.79 and 611.25

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Solution

The fourth proportional to 1,434.11, 2,149.79 and 611.25 is: 916.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,434.11 : 2,149.79 = 611.25 : x
  2. Step 2: Convert to fraction form
    1,434.11/2,149.79 = 611.25/x
  3. Step 3: Cross multiply
    1,434.11x = 2,149.79 × 611.25
  4. Step 4: Simplify right side
    1,434.11x = 1,314,048.39
  5. Step 5: Solve for x
    x = 1,314,048.39/1,434.11
  6. Step 6: Final answer
    x = 916.28

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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.