Home / 1,479.82-2,042.58-919.98

Finding the Fourth Proportional to 1,479.82, 2,042.58 and 919.98

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Solution

The fourth proportional to 1,479.82, 2,042.58 and 919.98 is: 1,269.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,479.82 : 2,042.58 = 919.98 : x
  2. Step 2: Convert to fraction form
    1,479.82/2,042.58 = 919.98/x
  3. Step 3: Cross multiply
    1,479.82x = 2,042.58 × 919.98
  4. Step 4: Simplify right side
    1,479.82x = 1,879,132.75
  5. Step 5: Solve for x
    x = 1,879,132.75/1,479.82
  6. Step 6: Final answer
    x = 1,269.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.