Home / 1,107.08-1,517.86-1,087.34

Finding the Fourth Proportional to 1,107.08, 1,517.86 and 1,087.34

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Solution

The fourth proportional to 1,107.08, 1,517.86 and 1,087.34 is: 1,490.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,107.08 : 1,517.86 = 1,087.34 : x
  2. Step 2: Convert to fraction form
    1,107.08/1,517.86 = 1,087.34/x
  3. Step 3: Cross multiply
    1,107.08x = 1,517.86 × 1,087.34
  4. Step 4: Simplify right side
    1,107.08x = 1,650,422.30
  5. Step 5: Solve for x
    x = 1,650,422.30/1,107.08
  6. Step 6: Final answer
    x = 1,490.80

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.