Home / 1,479.25-2,042.37-919.95

Finding the Fourth Proportional to 1,479.25, 2,042.37 and 919.95

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Solution

The fourth proportional to 1,479.25, 2,042.37 and 919.95 is: 1,270.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,479.25 : 2,042.37 = 919.95 : x
  2. Step 2: Convert to fraction form
    1,479.25/2,042.37 = 919.95/x
  3. Step 3: Cross multiply
    1,479.25x = 2,042.37 × 919.95
  4. Step 4: Simplify right side
    1,479.25x = 1,878,878.28
  5. Step 5: Solve for x
    x = 1,878,878.28/1,479.25
  6. Step 6: Final answer
    x = 1,270.16

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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.