Home / 1,519.87-2,275.44-938.83

Finding the Fourth Proportional to 1,519.87, 2,275.44 and 938.83

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Solution

The fourth proportional to 1,519.87, 2,275.44 and 938.83 is: 1,405.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,519.87 : 2,275.44 = 938.83 : x
  2. Step 2: Convert to fraction form
    1,519.87/2,275.44 = 938.83/x
  3. Step 3: Cross multiply
    1,519.87x = 2,275.44 × 938.83
  4. Step 4: Simplify right side
    1,519.87x = 2,136,251.34
  5. Step 5: Solve for x
    x = 2,136,251.34/1,519.87
  6. Step 6: Final answer
    x = 1,405.55

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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.