Home / 1,919.09-2,878.31-532.56

Finding the Fourth Proportional to 1,919.09, 2,878.31 and 532.56

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Solution

The fourth proportional to 1,919.09, 2,878.31 and 532.56 is: 798.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,919.09 : 2,878.31 = 532.56 : x
  2. Step 2: Convert to fraction form
    1,919.09/2,878.31 = 532.56/x
  3. Step 3: Cross multiply
    1,919.09x = 2,878.31 × 532.56
  4. Step 4: Simplify right side
    1,919.09x = 1,532,872.77
  5. Step 5: Solve for x
    x = 1,532,872.77/1,919.09
  6. Step 6: Final answer
    x = 798.75

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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.