Home / 1,918.91-2,878.22-532.31

Finding the Fourth Proportional to 1,918.91, 2,878.22 and 532.31

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Solution

The fourth proportional to 1,918.91, 2,878.22 and 532.31 is: 798.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,918.91 : 2,878.22 = 532.31 : x
  2. Step 2: Convert to fraction form
    1,918.91/2,878.22 = 532.31/x
  3. Step 3: Cross multiply
    1,918.91x = 2,878.22 × 532.31
  4. Step 4: Simplify right side
    1,918.91x = 1,532,092.23
  5. Step 5: Solve for x
    x = 1,532,092.23/1,918.91
  6. Step 6: Final answer
    x = 798.42

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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.