Home / 1,434.31-2,151.25-612.57

Finding the Fourth Proportional to 1,434.31, 2,151.25 and 612.57

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Solution

The fourth proportional to 1,434.31, 2,151.25 and 612.57 is: 918.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,434.31 : 2,151.25 = 612.57 : x
  2. Step 2: Convert to fraction form
    1,434.31/2,151.25 = 612.57/x
  3. Step 3: Cross multiply
    1,434.31x = 2,151.25 × 612.57
  4. Step 4: Simplify right side
    1,434.31x = 1,317,791.21
  5. Step 5: Solve for x
    x = 1,317,791.21/1,434.31
  6. Step 6: Final answer
    x = 918.76

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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.